$g_V/g_A$ FOR $\Sigma^{-} \to \Lambda e^{-} \nu_e$

For the sign convention, see the “Note on Baryon Decay Parameters” in the neutron Listings. The value is predicted to be zero by conserved vector current theory. The values averaged assume CVC-SU(3) weak magnetism term.

<table><thead><tr><th>VALUE</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5"><strong>0.01 ±0.10 OUR AVERAGE</strong></td></tr><tr><td colspan="5">Error includes scale factor of 1.5. See the ideogram below.</td></tr><tr><td>-0.034 ±0.080</td><td>1620</td><td>1 BOURQUIN</td><td>82 SPEC</td><td>SPS hyperon beam</td></tr><tr><td>-0.29 ±0.29</td><td>114</td><td>THOMPSON</td><td>80 ASPK</td><td>BNL hyperon beam</td></tr><tr><td>-0.17 ±0.35</td><td>55</td><td>TANENBAUM</td><td>75B SPEC</td><td>BNL hyperon beam</td></tr><tr><td>+0.45 ±0.20</td><td>186</td><td>1,2 FRANZINI</td><td>72 HBC</td><td></td></tr></tbody></table>

¹The sign has been changed to agree with our convention.

²The FRANZINI 72 value includes the events of earlier papers.

WEIGHTED AVERAGE
0.01±0.10 (Error scaled by 1.5)

<figure><img src="image_724.png" /></figure>

$g_Wm/g_A$ FOR $\Sigma^{-} \to \Lambda e^{-} \bar{\nu}_e$

The values quoted assume the CVC prediction $g_V = 0$.

<table><thead><tr><th>VALUE</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5"><strong>2.4 ±1.7 OUR AVERAGE</strong></td></tr><tr><td>1.75 ±3.5</td><td>114</td><td>THOMPSON</td><td>80 ASPK</td><td>BNL hyperon beam</td></tr><tr><td>3.5 ±4.5</td><td>55</td><td>TANENBAUM</td><td>75B SPEC</td><td>BNL hyperon beam</td></tr><tr><td>2.4 ±2.1</td><td>186</td><td>FRANZINI</td><td>72 HBC</td><td></td></tr></tbody></table>

$\Sigma^{-}$ REFERENCES

We have omitted some papers that have been superseded by later experiments. See our earlier editions.

<table><tbody><tr><td>ABLIKIM</td><td>21F</td><td>PR D103 052110</td><td>M. Ablikim et al.</td><td>(BESIII Collab.)</td></tr><tr><td>ESCHRICH</td><td>01</td><td>PL B522 233</td><td>I. Eschrich et al.</td><td>(FINAL SELEX Collab.)</td></tr><tr><td>GUVET</td><td>93</td><td>JETPL 57 400</td><td>M.P. Gurev et al.</td><td>(PNPI)</td></tr><tr><td></td><td></td><td>Translated from ZETFP 57 389.</td><td></td><td></td></tr><tr><td>GALL</td><td>88</td><td>PRL 60 186</td><td>K.P. Gall et al.</td><td>(BOST, MIT, WILL, CIT+)</td></tr><tr><td>HERTZOG</td><td>88</td><td>PR D37 1142</td><td>D.W. Hertzog et al.</td><td>(WILL, BOST, MIT+)</td></tr><tr><td>HSUEH</td><td>88</td><td>PR D38 2056</td><td>S.Y. Hsueh et al.</td><td>(CHIC, ELMT, FNAL+)</td></tr><tr><td>ZAPALAC</td><td>86</td><td>PRL 57 1526</td><td>G. Zapalac et al.</td><td>(EFI, ELMT, FNAL+)</td></tr><tr><td>HSUEH</td><td>85</td><td>PRL 54 2399</td><td>S.Y. Hsueh et al.</td><td>(CHIC, ELMT, FNAL+)</td></tr><tr><td>WAH</td><td>85</td><td>PRL 55 2551</td><td>Y.W. Wah et al.</td><td>(FNAL, IOWA, ISU)</td></tr><tr><td>BOURQUIN</td><td>83B</td><td>ZPHY C21 27</td><td>M.H. Bourquin et al.</td><td>(BRIS, GEVA, HEIDP+)</td></tr><tr><td>BOURQUIN</td><td>83C</td><td>ZPHY C21 17</td><td>M.H. Bourquin et al.</td><td>(BRIS, GEVA, HEIDP+)</td></tr><tr><td>DECK</td><td>83</td><td>PR D28 1</td><td>L. Debacker et al.</td><td>(RUTG, WISC, MICH, MINN)</td></tr><tr><td>BOURQUIN</td><td>82</td><td>ZPHY C12 307</td><td>M.H. Bourquin et al.</td><td>(BRIS, GEVA, HEIDP+)</td></tr><tr><td>MARRAFFINO</td><td>250</td><td>PR D21 2501</td><td>J. Marraffino et al.</td><td>(VAND, MPIM)</td></tr><tr><td>THOMPSON</td><td>80</td><td>PR D21 25</td><td>J.A. Thompson et al.</td><td>(PITT, BNL)</td></tr><tr><td>HANSL</td><td>78</td><td>NP B132 45</td><td>T. Hansl et al.</td><td>(MPIM, VAND)</td></tr><tr><td>DECAMP</td><td>77</td><td>PL 66B 295</td><td>D. Decamp et al.</td><td>(LALO, EPOL)</td></tr><tr><td>CONFORTO</td><td>76</td><td>NP B105 189</td><td>B. Conforto et al.</td><td>(RHEL, LOIC)</td></tr><tr><td>DUGAN</td><td>75</td><td>NP A254 396</td><td>G. Dugan et al.</td><td>(COLU, YALE)</td></tr><tr><td>TANENBAUM</td><td>75B</td><td>PR D12 1871</td><td>W. Tanenbaum et al.</td><td>(YALE, FNAL, BNL)</td></tr><tr><td>EBENHOH</td><td>74</td><td>ZPHY 266 367</td><td>H. Ebenhoh et al.</td><td>(HEIDT)</td></tr><tr><td>TANENBAUM</td><td>74</td><td>PRL 33 175</td><td>W. Tanenbaum et al.</td><td>(YALE, FNAL, BNL)</td></tr><tr><td>EBENHOH</td><td>73</td><td>ZPHY 264 413</td><td>W. Ebenhoh et al.</td><td>(HEIDT)</td></tr><tr><td>SECHI-ZORN</td><td>73</td><td>PR D8 12</td><td>B. Sechi-Zorn, G.A. Snow</td><td>(UMD)</td></tr><tr><td>BOHM</td><td>72</td><td>NP B48 1</td><td>G. Bohm et al.</td><td>(BERL, KIDR, BRUX, IASD+)</td></tr><tr><td>FRANZINI</td><td>72</td><td>PR D6 2417</td><td>P. Franzini et al.</td><td>(COLU, HEID, UMD+)</td></tr><tr><td>ROBERTSON</td><td>72</td><td>Theis UMI 78-00877</td><td>R.M. Robertson</td><td>(HIT)</td></tr><tr><td>BAKKER</td><td>71</td><td>LNC 137</td><td>A.M. Bakker et al.</td><td>(SABRE Collab.)</td></tr><tr><td>COLE</td><td>71</td><td>PR D4 631</td><td>J. Cole et al.</td><td>(STON, COLU)</td></tr><tr><td>Also</td><td></td><td>Thesis Nevis 175</td><td>H. Norton</td><td>(COLU)</td></tr><tr><td>TOVEE</td><td>71</td><td>NP B33 493</td><td>D.N. Toovee et al.</td><td>(LOUC, KIDR, BERL+)</td></tr><tr><td>BERLEY</td><td>70B</td><td>PR D1 2015</td><td>D. Berley et al.</td><td>(BNL, MASA, YALE)</td></tr><tr><td>BOGERT</td><td>70</td><td>PR D2 6</td><td>D.V. Bogert et al.</td><td>(BNL, MASA, YALE)</td></tr><tr><td>EISELE</td><td>70</td><td>ZPHY 238 372</td><td>F. Eisele et al.</td><td>(HEID)</td></tr><tr><td>PDG</td><td>70</td><td>RMP 42 87</td><td>A. Barbaro-Galtieri et al.</td><td>(LRL, BRAN+)</td></tr><tr><td>ANG</td><td>69</td><td>ZPHY 223 103</td><td>G. Ang et al.</td><td>(HEID)</td></tr><tr><td>ANG</td><td>69B</td><td>ZPHY 228 151</td><td>G. Ang et al.</td><td>(HEID)</td></tr><tr><td>BAGGETT</td><td>69</td><td>PRL 23 249</td><td>N.V. Baggett, B. Kehoe, G.A. Snow</td><td>(UMD)</td></tr><tr><td>BALTAY</td><td>69</td><td>PRL 22 615</td><td>C. Baltay et al.</td><td>(COLU, STON)</td></tr><tr><td>BANGERTER</td><td>69</td><td>Theis UCRL 19244</td><td>R.O. Bangerter</td><td>(LRL)</td></tr><tr><td>BANGERTER</td><td>69B</td><td>PR 187 1821</td><td>R. O. Bangerter et al.</td><td>(LRL)</td></tr><tr><td>BARLOUTAUD</td><td>69</td><td>NP B14 153</td><td>R. Bartoutaud et al.</td><td>(SACL, CERN, HEID)</td></tr><tr><td>EISELE</td><td>68</td><td>ZPHY 221 1</td><td>E. Bierman et al.</td><td>(HEID)</td></tr><tr><td>BIERMAN</td><td>68</td><td>PRL 20 1459</td><td>V. Hepp, H. Schleich</td><td>(PRIN)</td></tr><tr><td>HEPP</td><td>68</td><td>ZPHY 214 71</td><td>V. Hepp, H. Schleich</td><td>(HEID)</td></tr><tr><td>WHITESIDE</td><td>68</td><td>NC 54A 537</td><td>H. Whiteside, J. Gollub</td><td>(OBER)</td></tr></tbody></table>

<table><tbody><tr><td>BARASH</td><td>67</td><td>PRL 19 181</td><td>N. Barash et al.</td><td>(UMD)</td></tr><tr><td>CHANG</td><td>66</td><td>PR 151 1081</td><td>C.Y. Chang</td><td>(COLU)</td></tr><tr><td>BAZIN</td><td>65B</td><td>PR 140 B1358</td><td>M. Bazin et al.</td><td>(PRIN, RUTG, COLU)</td></tr><tr><td>DOSCH</td><td>65</td><td>PL 14 239</td><td>H.C. Dosch et al.</td><td>(HEID)</td></tr><tr><td>Also</td><td></td><td>PRL 151 1081</td><td>C.Y. Chang</td><td>(COLU)</td></tr><tr><td>SCHMIDT</td><td>65</td><td>PR 140 B1328</td><td>P. Schmidt</td><td>(COLU)</td></tr><tr><td>BURNSTEIN</td><td>64</td><td>PRL 13 66</td><td>R.A. Burnstein et al.</td><td>(UMD)</td></tr><tr><td>COURANT</td><td>64</td><td>PRL 136 B1791</td><td>H. Courant et al.</td><td>(CERN, HEID, UMD+)</td></tr><tr><td>BARKAS</td><td>63</td><td>PRL 11 26</td><td>W.H. Barkas, J.N. Dyer, H.H. Heckman</td><td>(LRL)</td></tr><tr><td>HUMPHREY</td><td>62</td><td>PR 127 1305</td><td>W.E. Humphrey, R.R. Ross</td><td>(LRL)</td></tr></tbody></table>

$$ \Sigma(1385) 3/2^+ $$

$$ I(J^P) = 1(\frac{3}{2}^+) \text{ Status: } \*\*\*\* $$

Discovered by ALSTON 60. Early measurements of the mass and width for combined charge states have been omitted. They may be found in our 1984 edition Reviews of Modern Physics 56 S1 (1984).

We average only the most significant determinations. We do not average results from inclusive experiments with large backgrounds or results which are not accompanied by some discussion of experimental resolution. Nevertheless systematic differences between experiments remain. (See the ideograms in the Listings below.) These differences could arise from interference effects that change with production mechanism and/or beam momentum. They can also be accounted for in part by differences in the parametrizations employed. (See BORENSTEIN 74 for a discussion on this point.) Thus BORENSTEIN 74 uses a Breit-Wigner with energy-independent width, since a P-wave was found to give unsatisfactory fits. CAMERON 78 uses the same form. On the other hand HOLMGREN 77 obtains a good fit to their $\Lambda\pi$ spectrum with a P-wave Breit-Wigner, but includes the partial width for the $\Sigma\pi$ decay mode in the parametrization. AGUILAR-BENITEZ 81D gives masses and widths for five different Breit-Wigner shapes. The results vary considerably. Only the best-fit S-wave results are given here.

$\Sigma(1385)$ POLE POSITIONS

$\Sigma(1385)^+ \text{ REAL PART}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>COMMENT</th></tr></thead><tbody><tr><td>1379 ± 1</td><td>LICHTENBERG74</td><td>Extrapolates HABIBI 73</td></tr></tbody></table>

$\Sigma(1385)^+ \text{ IMAGINARY PART}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>COMMENT</th></tr></thead><tbody><tr><td>17.5 ± 1.5</td><td>LICHTENBERG74</td><td>Extrapolates HABIBI 73</td></tr></tbody></table>

$\Sigma(1385)^- \text{ REAL PART}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>COMMENT</th></tr></thead><tbody><tr><td>1383 ± 1</td><td>LICHTENBERG74</td><td>Extrapolates HABIBI 73</td></tr></tbody></table>

$\Sigma(1385)^- \text{ IMAGINARY PART}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>COMMENT</th></tr></thead><tbody><tr><td>22.5 ± 1.5</td><td>LICHTENBERG74</td><td>Extrapolates HABIBI 73</td></tr></tbody></table>

$\Sigma(1385)$ MASSES

$\Sigma(1385)^+ \text{ MASS}$

<table><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5"><strong>1382.83 ± 0.34 OUR AVERAGE</strong></td></tr><tr><td colspan="5">Error Includes scale factor of 1.9. See the ideogram below.</td></tr><tr><td>1384.8 ± 0.3 ± 1.4</td><td></td><td>LEE</td><td>21A BELL</td><td>$\Lambda^+ \to \eta \Sigma(1385)^+$</td></tr><tr><td>1383.2 ± 0.9 ± 0.1</td><td></td><td>AGAKISHIEV</td><td>12 SPEC</td><td>$pp \to \Sigma(1385)^+ K^+ n, 3.5 GeV$</td></tr><tr><td>1384.1 ± 0.7</td><td>1897</td><td>BAUBILLIER</td><td>84 HBC</td><td>$K^- p 8.25 GeV/c$</td></tr><tr><td>1384.5 ± 0.5</td><td>5256</td><td>AGUILAR-...</td><td>81D HBC</td><td>$K^- p \to \Lambda\pi 4.2 GeV/c$</td></tr><tr><td>1383.0 ± 0.4</td><td>9361</td><td>AGUILAR-...</td><td>81D HBC</td><td>$K^- p \to \Lambda3\pi 4.2 GeV/c$</td></tr><tr><td>1381.9 ± 0.3</td><td>6900</td><td>CAMERON</td><td>78 HBC</td><td>$K^- p 0.96-1.36 GeV/c$</td></tr><tr><td>1381 ± 1</td><td>6846</td><td>BORENSTEIN</td><td>74 HBC</td><td>$K^- p 2.18 GeV/c$</td></tr><tr><td>1383.5 ± 0.85</td><td>2300</td><td>HABIBI</td><td>73 HBC</td><td>$K^- p \to \Lambda\pi$</td></tr><tr><td>1382 ± 2</td><td>400</td><td>AGUILAR-...</td><td>72B HBC</td><td>$K^- p \to \Lambda\pi$'s</td></tr><tr><td>1384.4 ± 1.0</td><td>1260</td><td>SIEGEL</td><td>67 HBC</td><td>$K^- p 2.1 GeV/c$</td></tr><tr><td>1382 ± 1</td><td>750</td><td>ARMENTEROS65B</td><td>81D HBC</td><td>$K^- p 0.9-1.2 GeV/c$</td></tr><tr><td>1381.0 ± 1.6</td><td>859</td><td>HUWE</td><td>64 HBC</td><td>$K^- p 1.22 GeV/c$</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>1385.1 ± 1.2</td><td>600</td><td>BAKER</td><td>80 HYBR</td><td>$\pi^+ p 7 GeV/c$</td></tr><tr><td>1383.2 ± 1.0</td><td>750</td><td>BAKER</td><td>80 HYBR</td><td>$K^- p 7 GeV/c$</td></tr><tr><td>1381 ± 2</td><td>7k</td><td><sup>1</sup> BAUBILLIER</td><td>79B HBC</td><td>$K^- p 8.25 GeV/c$</td></tr><tr><td>1391 ± 2</td><td>2k</td><td>CAUTIS</td><td>79 HYBR</td><td>$\pi^+ p/K^- p 11.5 GeV$</td></tr><tr><td>1390 ± 2</td><td>100</td><td><sup>1</sup> SUGAHARA</td><td>79B HBC</td><td>$\pi^- p 6 GeV/c$</td></tr><tr><td>1385 ± 3</td><td>22k</td><td><sup>1,2</sup> BARREIRO</td><td>77B HBC</td><td>$K^- p 4.2 GeV/c$</td></tr><tr><td>1385 ± 1</td><td>2594</td><td>HOLMGREN</td><td>77 HBC</td><td>See AGUILAR-BENITEZ 81D</td></tr><tr><td>1380 ± 2</td><td></td><td><sup>1</sup> BARDADIN-...</td><td>75 HBC</td><td>$K^- p 14.3 GeV/c$</td></tr><tr><td>1382 ± 1</td><td>3740</td><td><sup>3</sup> BERTHON</td><td>74 HBC</td><td>$K^- p 1263-1843 MeV/c$</td></tr><tr><td>1390 ± 6</td><td>46</td><td>AGUILAR-...</td><td>70B HBC</td><td>$K^- p \to \Sigma\pi^* 4 GeV/c$</td></tr><tr><td>1383 ± 8</td><td>62</td><td><sup>4</sup> BIRMINGHAM</td><td>66 HBC</td><td>$K^- p 3.5 GeV/c$</td></tr></tbody></table>
<table><caption>WEIGHTED AVERAGE
1382.83±0.34 (Error scaled by 1.9)</caption><tr><td>1378 ±5</td><td>135</td><td>LONDON</td><td>66</td><td>HBC</td><td>K<sup>-</sup> p 2.24 GeV/c</td></tr><tr><td>1384.3 ±1.9</td><td>250</td><td><sup>4</sup> SMITH</td><td>65</td><td>HBC</td><td>K<sup>-</sup> p 1.8 GeV/c</td></tr><tr><td>1382.6 ±2.1</td><td>250</td><td><sup>4</sup> SMITH</td><td>65</td><td>HBC</td><td>K<sup>-</sup> p 1.95 GeV/c</td></tr><tr><td>1375.0 ±3.9</td><td>170</td><td>COOPER</td><td>64</td><td>HBC</td><td>K<sup>-</sup> p 1.45 GeV/c</td></tr><tr><td>1376.0 ±3.9</td><td>154</td><td><sup>4</sup> ELY</td><td>61</td><td>HLBC</td><td>K<sup>-</sup> p 1.11 GeV/c</td></tr></table>

<figure><img src="image_725.png" /></figure>

## Σ(1385)⁰ MASS

<table><caption>WEIGHTED AVERAGE
1383.7±1.0 (Error scaled by 1.4)</caption><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>1383.7 ±1.0</strong> OUR AVERAGE</td><td></td><td>Error includes scale factor of 1.4.</td><td></td><td>See the ideogram below.</td></tr><tr><td>1384.1 ±0.8</td><td>5722</td><td>AGUILAR-...</td><td>81D</td><td>HBC K<sup>-</sup> p → Λ3π 4.2 GeV/c</td></tr><tr><td>1380 ±2</td><td>3100</td><td><sup>5</sup> BORENSTEIN</td><td>74</td><td>HBC K<sup>-</sup> p → Λ3π 2.18 GeV/c</td></tr><tr><td>1385.1 ±2.5</td><td>240</td><td><sup>4</sup> THOMAS</td><td>73</td><td>HBC π<sup>-</sup> p → Λπ<sup>0</sup> K<sup>0</sup></td></tr><tr><td colspan="5">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>1389 ±3</td><td>500</td><td><sup>6</sup> BAUBILLIER</td><td>79B</td><td>HBC K<sup>-</sup> p 8.25 GeV/c</td></tr></tbody></table>

<figure><img src="image_726.png" /></figure>

## Σ(1385)⁻ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>1387.2 ±0.5</strong> OUR AVERAGE</td><td></td><td>Error includes scale factor of 2.2.</td><td></td><td>See the ideogram below.</td></tr><tr><td>1388.3 ±1.7</td><td>620</td><td>AGUILAR-...</td><td>81D</td><td>HBC K<sup>-</sup> p → Λππ 4.2 GeV/c</td></tr><tr><td>1384.9 ±0.8</td><td>3346</td><td>AGUILAR-...</td><td>81D</td><td>HBC K<sup>-</sup> p → Λ3π 4.2 GeV/c</td></tr><tr><td>1387.6 ±0.3</td><td>9720</td><td>CAMERON</td><td>78</td><td>HBC K<sup>-</sup> p 0.96-1.36 GeV/c</td></tr><tr><td>1383 ±2</td><td>2303</td><td>BORENSTEIN</td><td>74</td><td>HBC K<sup>-</sup> p 2.18 GeV/c</td></tr><tr><td>1390.7 ±1.2</td><td>1900</td><td>HABIBI</td><td>73</td><td>HBC K<sup>-</sup> p → Λππ</td></tr><tr><td>1387.1 ±1.9</td><td>630</td><td><sup>4</sup> THOMAS</td><td>73</td><td>HBC π<sup>-</sup> p → Λπ<sup>-</sup> K<sup>+</sup></td></tr><tr><td>1390.7 ±2.0</td><td>370</td><td>SIEGEL</td><td>67</td><td>HBC K<sup>-</sup> p 2.1 GeV/c</td></tr><tr><td>1384 ±1</td><td>1380</td><td>ARMENTEROS65B</td><td>73</td><td>HBC K<sup>-</sup> p 0.9-1.2 GeV/c</td></tr><tr><td>1385.3 ±1.9</td><td>1086</td><td><sup>4</sup> HUWE</td><td>64</td><td>HBC K<sup>-</sup> p 1.15-1.30 GeV/c</td></tr><tr><td colspan="5">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>1383 ±1</td><td>4.5k</td><td><sup>1</sup> BAUBILLIER</td><td>79B</td><td>HBC K<sup>-</sup> p 8.25 GeV/c</td></tr><tr><td>1380 ±6</td><td>150</td><td><sup>1</sup> SUGAHARA</td><td>79B</td><td>HBC π<sup>-</sup> p 6 GeV/c</td></tr><tr><td>1387 ±3</td><td>12k</td><td><sup>1,2</sup> BARREIRO</td><td>77B</td><td>HBC K<sup>-</sup> p 4.2 GeV/c</td></tr><tr><td>1391 ±3</td><td>193</td><td>HOLMGREN</td><td>77</td><td>HBC See AGUILAR-BENITEZ 81D</td></tr><tr><td>1383 ±2</td><td></td><td><sup>1</sup> BARDADIN-...</td><td>75</td><td>HBC K<sup>-</sup> p 14.3 GeV/c</td></tr><tr><td>1389 ±1</td><td>3060</td><td><sup>3</sup> BERTHON</td><td>74</td><td>HBC K<sup>-</sup> p 1263-1843 MeV/c</td></tr></tbody></table>

<table><caption>WEIGHTED AVERAGE
1387.2±0.5 (Error scaled by 2.2)</caption><tr><td>1389 ±9</td><td>15</td><td>LONDON</td><td>66</td><td>HBC K<sup>-</sup> p 2.24 GeV/c</td></tr><tr><td>1391.5 ±2.6</td><td>120</td><td><sup>4</sup> SMITH</td><td>65</td><td>HBC K<sup>-</sup> p 1.8 GeV/c</td></tr><tr><td>1399.8 ±2.2</td><td>58</td><td><sup>4</sup> SMITH</td><td>65</td><td>HBC K<sup>-</sup> p 1.95 GeV/c</td></tr><tr><td>1392.0 ±6.2</td><td>200</td><td>COOPER</td><td>64</td><td>HBC K<sup>-</sup> p 1.45 GeV/c</td></tr><tr><td>1382 ±3</td><td>93</td><td>DAHL</td><td>61</td><td>DBC K<sup>-</sup> d 0.45 GeV/c</td></tr><tr><td>1376.0 ±4.4</td><td>224</td><td><sup>4</sup> ELY</td><td>61</td><td>HLBC K<sup>-</sup> p 1.11 GeV/c</td></tr></table>

<figure><img src="image_727.png" /></figure>

## $m_{\Sigma(1385)}^-$ - $m_{\Sigma(1385)}^+$

<table><thead><tr><th>VALUE (MeV)</th><th>CL%</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>-2 to +6</td><td>95</td><td><sup>7</sup> BORENSTEIN</td><td>74</td><td>HBC K<sup>-</sup> p 2.18 GeV/c</td></tr><tr><td>7.2±1.4</td><td></td><td><sup>7</sup> HABIBI</td><td>73</td><td>HBC K<sup>-</sup> p → Λππ</td></tr><tr><td>6.3±2.0</td><td></td><td><sup>7</sup> SIEGEL</td><td>67</td><td>HBC K<sup>-</sup> p 2.1 GeV/c</td></tr><tr><td>11 ±9</td><td></td><td><sup>7</sup> LONDON</td><td>66</td><td>HBC K<sup>-</sup> p 2.24 GeV/c</td></tr><tr><td>9 ±6</td><td></td><td><sup>7</sup> LONDON</td><td>66</td><td>HBC Λ3π events</td></tr><tr><td>2.0±1.5</td><td></td><td><sup>7</sup> ARMENTEROS65B</td><td>66</td><td>HBC K<sup>-</sup> p 0.9-1.2 GeV/c</td></tr><tr><td>7.2±2.1</td><td></td><td><sup>7</sup> SMITH</td><td>65</td><td>HBC K<sup>-</sup> p 1.8 GeV/c</td></tr><tr><td>17.2±2.0</td><td></td><td><sup>7</sup> SMITH</td><td>65</td><td>HBC K<sup>-</sup> p 1.95 GeV/c</td></tr><tr><td>17 ±7</td><td></td><td><sup>7</sup> COOPER</td><td>64</td><td>HBC K<sup>-</sup> p 1.45 GeV/c</td></tr><tr><td>4.3±2.2</td><td></td><td><sup>7</sup> HUWE</td><td>64</td><td>HBC K<sup>-</sup> p 1.22 GeV/c</td></tr><tr><td>0.0±4.2</td><td></td><td><sup>7</sup> ELY</td><td>61</td><td>HLBC K<sup>-</sup> p 1.11 GeV/c</td></tr></tbody></table>

## $m_{\Sigma(1385)}^0$ - $m_{\Sigma(1385)}^+$

<table><thead><tr><th>VALUE (MeV)</th><th>CL%</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>-4 to +4</td><td>95</td><td><sup>7</sup> BORENSTEIN</td><td>74</td><td>HBC K<sup>-</sup> p 2.18 GeV/c</td></tr></tbody></table>

## $m_{\Sigma(1385)}^-$ - $m_{\Sigma(1385)}^0$

<table><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>2.0±2.4</td><td></td><td><sup>7</sup> THOMAS</td><td>73</td><td>HBC π<sup>-</sup> p → Λπ<sup>-</sup> K<sup>+</sup></td></tr></tbody></table>

## Σ(1385) WIDTHS

### Σ(1385)⁺ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>36.2 ± 0.7</strong> OUR AVERAGE</td><td></td><td></td><td></td><td></td></tr><tr><td>38.1 ± 1.5 ± 2.1</td><td></td><td>LEE</td><td>21A</td><td>BELL Λ<sup>+</sup><sub>c</sub> → ηΣ(1385)<sup>+</sup></td></tr><tr><td>40.2 ± 2.1<sup>+1.2</sup><sub>-2.8</sub></td><td></td><td>AGAKISHIEV</td><td>12</td><td>SPEC pp → Σ(1385)<sup>+</sup> K<sup>+</sup> n, 3.5 GeV</td></tr><tr><td>37.2 ± 2.0</td><td>1897</td><td>BAUBILLIER</td><td>84</td><td>HBC K<sup>-</sup> p → Λππ 4.2 GeV/c</td></tr><tr><td>35.1 ± 1.7</td><td>5256</td><td>AGUILAR-...</td><td>81D</td><td>HBC K<sup>-</sup> p → Λ3π 4.2 GeV/c</td></tr><tr><td>37.5 ± 2.0</td><td>9361</td><td>AGUILAR-...</td><td>81D</td><td>HBC K<sup>-</sup> p → Λ3π 4.2 GeV/c</td></tr><tr><td>35.5 ± 1.9</td><td>6900</td><td>CAMERON</td><td>78</td><td>HBC K<sup>-</sup> p 0.96-1.36 GeV/c</td></tr><tr><td>34.0 ± 1.6</td><td>6846</td><td><sup>8</sup> BORENSTEIN</td><td>74</td><td>HBC K<sup>-</sup> p 2.18 GeV/c</td></tr><tr><td>38.3 ± 3.2</td><td>2300</td><td><sup>9</sup> HABIBI</td><td>73</td><td>HBC K<sup>-</sup> p → Λππ</td></tr><tr><td>32.5 ± 6.0</td><td>400</td><td>AGUILAR-...</td><td>72B</td><td>HBC K<sup>-</sup> p → Λπ<sup>-</sup>'s</td></tr><tr><td>36 ± 4</td><td>1260</td><td><sup>9</sup> SIEGEL</td><td>67</td><td>HBC K<sup>-</sup> p 2.1 GeV/c</td></tr><tr><td>32.0 ± 4.7</td><td>750</td><td><sup>9</sup> ARMENTEROS65B</td><td>73</td><td>HBC K<sup>-</sup> p 0.95-1.20 GeV/c</td></tr><tr><td>46.5 ± 6.4</td><td>859</td><td><sup>9</sup> HUWE</td><td>64</td><td>HBC K<sup>-</sup> p 1.15-1.30 GeV/c</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>40 ± 3</td><td>600</td><td>BAKER</td><td>80</td><td>HYBR π<sup>+</sup> p 7 GeV/c</td></tr><tr><td>37 ± 2</td><td>750</td><td>BAKER</td><td>80</td><td>HYBR K<sup>-</sup> p 7 GeV/c</td></tr><tr><td>37 ± 2</td><td>7k</td><td><sup>1</sup> BAUBILLIER</td><td>79B</td><td>HBC K<sup>-</sup> p 8.25 GeV/c</td></tr><tr><td>30 ± 4</td><td>2k</td><td>CAUTIS</td><td>79</td><td>HYBR π<sup>+</sup> p/K<sup>-</sup> p 11.5 GeV</td></tr></table>
<table><tbody><tr><td>30 ± 6</td><td>100</td><td>1 SUGAHARA</td><td>79b HBC</td><td>π<sup>-</sup> p 6 GeV/c</td></tr><tr><td>43 ± 5</td><td>22k</td><td>1,2 BARREIRO</td><td>77b HBC</td><td>K<sup>-</sup> p 4.2 GeV/c</td></tr><tr><td>34 ± 2</td><td>2594</td><td>HOLMGREN</td><td>77 HBC</td><td>See AGUILAR-BENITEZ 81D</td></tr><tr><td>40.0 ± 3.2</td><td></td><td>1 BARDADIN...</td><td>75 HBC</td><td>K<sup>-</sup> p 14.3 GeV/c</td></tr><tr><td>48 ± 3</td><td>3740</td><td>3 BERTHON</td><td>74 HBC</td><td>K<sup>-</sup> p 1263-1843 MeV/c</td></tr><tr><td>33 ± 20</td><td>46</td><td>9 AGUILAR...</td><td>70b HBC</td><td>K<sup>-</sup> p → Σπ<sup>+</sup> 4 GeV/c</td></tr><tr><td>25 ± 32</td><td>62</td><td>9 BIRMINGHAM</td><td>66 HBC</td><td>K<sup>-</sup> p 3.5 GeV/c</td></tr><tr><td>30.3 ± 7.5</td><td>250</td><td>9 SMITH</td><td>65 HBC</td><td>K<sup>-</sup> p 1.8 GeV/c</td></tr><tr><td>33.1 ± 8.3</td><td>250</td><td>9 SMITH</td><td>65 HBC</td><td>K<sup>-</sup> p 1.95 GeV/c</td></tr><tr><td>51 ± 16</td><td>170</td><td>9 COOPER</td><td>64 HBC</td><td>K<sup>-</sup> p 1.45 GeV/c</td></tr><tr><td>48 ± 16</td><td>154</td><td>9 ELY</td><td>61 HLBC</td><td>K<sup>-</sup> p 1.11 GeV/c</td></tr></tbody></table>

### $\Sigma(1385)^0$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>36 ± 5</strong> OUR AVERAGE</td><td></td><td></td><td></td><td></td></tr><tr><td>34.8 ± 5.6</td><td>5722</td><td>AGUILAR...</td><td>81d HBC</td><td>K<sup>-</sup> p → Λ3π 4.2 GeV/c</td></tr><tr><td>39.3 ± 10.2</td><td>240</td><td>9 THOMAS</td><td>73 HBC</td><td>π<sup>-</sup> p → Λπ<sup>0</sup> K<sup>0</sup></td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>53 ± 8</td><td>3100</td><td><sup>10</sup> BORENSTEIN</td><td>74 HBC</td><td>K<sup>-</sup> p → Λ3π 2.18 GeV/c</td></tr><tr><td>30 ± 9</td><td>106</td><td>CURTIS</td><td>63 OSPK</td><td>π<sup>-</sup> p 1.5 GeV/c</td></tr></tbody></table>

### $\Sigma(1385)^-$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>39.4 ± 2.1</strong> OUR AVERAGE</td><td></td><td></td><td></td><td></td></tr><tr><td>38.4 ± 10.7</td><td>620</td><td>AGUILAR...</td><td>81d HBC</td><td>K<sup>-</sup> p → Λππ 4.2 GeV/c</td></tr><tr><td>34.6 ± 4.2</td><td>3346</td><td>AGUILAR...</td><td>81d HBC</td><td>K<sup>-</sup> p → Λ3π 4.2 GeV/c</td></tr><tr><td>39.2 ± 1.7</td><td>9720</td><td>CAMERON</td><td>78 HBC</td><td>K<sup>-</sup> p 0.96-1.36 GeV/c</td></tr><tr><td>35 ± 3</td><td>2303</td><td><sup>8</sup> BORENSTEIN</td><td>74 HBC</td><td>K<sup>-</sup> p 2.18 GeV/c</td></tr><tr><td>51.9 ± 4.8</td><td>1900</td><td>9 HABIBI</td><td>73 HBC</td><td>K<sup>-</sup> p → Λππ</td></tr><tr><td>48.2 ± 7.7</td><td>630</td><td>9 THOMAS</td><td>73 HBC</td><td>π<sup>-</sup> p → Λπ<sup>-</sup> K<sup>0</sup></td></tr><tr><td>31.0 ± 6.5</td><td>370</td><td>9 SIEGEL</td><td>67 HBC</td><td>K<sup>-</sup> p 2.1 GeV/c</td></tr><tr><td>38.0 ± 4.1</td><td>1382</td><td>9 ARMENTEROS65b</td><td>81d HBC</td><td>K<sup>-</sup> p 0.95-1.20 GeV/c</td></tr><tr><td>62 ± 7</td><td>1086</td><td>HUWE</td><td>64 HBC</td><td>K<sup>-</sup> p 1.15-1.30 GeV/c</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><caption>WEIGHTED AVERAGE
39.4±2.1 (Error scaled by 1.7)</caption><tbody><tr><td>44 ± 4</td><td>4.5k</td><td><sup>1</sup> BAUBILLIER</td><td>79b HBC</td><td>K<sup>-</sup> p 8.25 GeV/c</td></tr><tr><td>58 ± 4</td><td>150</td><td><sup>1</sup> SUGAHARA</td><td>79b HBC</td><td>π<sup>-</sup> p 6 GeV/c</td></tr><tr><td>45 ± 5</td><td>12k</td><td><sup>1,2</sup> BARREIRO</td><td>77b HBC</td><td>K<sup>-</sup> p 4.2 GeV/c</td></tr><tr><td>35 ± 10</td><td>193</td><td>HOLMGREN</td><td>77 HBC</td><td>See AGUILAR-BENITEZ 81D</td></tr><tr><td>47 ± 6</td><td></td><td><sup>1</sup> BARDADIN...</td><td>75 HBC</td><td>K<sup>-</sup> p 14.3 GeV/c</td></tr><tr><td>40 ± 3</td><td>3060</td><td><sup>3</sup> BERTHON</td><td>74 HBC</td><td>K<sup>-</sup> p 1263-1843 MeV/c</td></tr><tr><td>29.2 ± 10.6</td><td>120</td><td>9 SMITH</td><td>65 HBC</td><td>K<sup>-</sup> p 1.80 GeV/c</td></tr><tr><td>17.1 ± 8.9</td><td>58</td><td>9 SMITH</td><td>65 HBC</td><td>K<sup>-</sup> p 1.95 GeV/c</td></tr><tr><td>88 ± 24</td><td>200</td><td>9 COOPER</td><td>64 HBC</td><td>K<sup>-</sup> p 1.45 GeV/c</td></tr><tr><td>40</td><td></td><td>DAHL</td><td>61 DBC</td><td>K<sup>-</sup> d 0.45 GeV/c</td></tr><tr><td>66 ± 18</td><td>224</td><td>9 ELY</td><td>61 HLBC</td><td>K<sup>-</sup> p 1.11 GeV/c</td></tr></tbody></table>

<figure><img src="image_728.png" /></figure>

### $\Sigma(1385)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction ($\Gamma_f/\Gamma$)</th><th>Confidence level</th></tr></thead><tbody><tr><td>$\Gamma_1$</td><td>$\Lambda\pi$</td><td>(87.0 ± 1.5) %</td></tr><tr><td>$\Gamma_2$</td><td>$\Sigma\pi$</td><td>(11.7 ± 1.5) %</td></tr><tr><td>$\Gamma_3$</td><td>$\Lambda\gamma$</td><td>(1.25<sup>+0.13</sup><sub>-0.12</sub>) %</td></tr><tr><td>$\Gamma_4$</td><td>$\Sigma^+\gamma$</td><td>(7.0 ± 1.7) × 10<sup>-3</sup></td></tr><tr><td>$\Gamma_5$</td><td>$\Sigma^-\gamma$</td><td>&lt; 2.4 × 10<sup>-4</sup></td></tr><tr><td>$\Gamma_6$</td><td>$N\bar{K}$</td><td>90%</td></tr></tbody></table>

### $\Sigma(1385)$ BRANCHING RATIOS

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>CHG</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="5"><strong>0.135±0.011</strong> OUR AVERAGE</td></tr><tr><td>0.20 ± 0.06</td><td>DIONISI</td><td>78b HBC</td><td>±</td><td>K<sup>-</sup> p → Y* K<sup>-</sup></td></tr><tr><td>0.16 ± 0.03</td><td>BERTHON</td><td>74 HBC</td><td>+</td><td>K<sup>-</sup> p 1.26-1.84 GeV/c</td></tr><tr><td>0.11 ± 0.02</td><td>BERTHON</td><td>74 HBC</td><td>-</td><td>K<sup>-</sup> p 1.26-1.84 GeV/c</td></tr><tr><td>0.21 ± 0.05</td><td>BORENSTEIN</td><td>74 HBC</td><td>+</td><td>K<sup>-</sup> p → Λπ<sup>+</sup>π<sup>-</sup>,<br>$\Sigma^0\pi^+\pi^-$</td></tr><tr><td>0.18 ± 0.04</td><td>MAST</td><td>73 MPWA</td><td>±</td><td>K<sup>-</sup> p → Λπ<sup>+</sup>π<sup>-</sup>,<br>$\Sigma^0\pi^+\pi^-$</td></tr><tr><td>0.10 ± 0.05</td><td>THOMAS</td><td>73 HBC</td><td>-</td><td>π<sup>-</sup> p → ΛKπ, ΣKπ</td></tr><tr><td>0.16 ± 0.07</td><td>AGUILAR...</td><td>72b HBC</td><td>+</td><td>K<sup>-</sup> p 3.9, 4.6 GeV/c</td></tr><tr><td>0.13 ± 0.04</td><td>COLLEY</td><td>71b DBC</td><td>-0</td><td>K<sup>-</sup> N 1.5 GeV/c</td></tr><tr><td>0.13 ± 0.04</td><td>PAN</td><td>69 HBC</td><td>+</td><td>π<sup>+</sup> p → ΛKπ, ΣKπ</td></tr><tr><td>0.08 ± 0.06</td><td>LONDON</td><td>66 HBC</td><td>+</td><td>K<sup>-</sup> p 2.24 GeV/c</td></tr><tr><td>0.163 ± 0.041</td><td>ARMENTEROS65b</td><td>81d HBC</td><td>±</td><td>K<sup>-</sup> p 0.95-1.20 GeV/c</td></tr><tr><td>0.09 ± 0.04</td><td>HUWE</td><td>64 HBC</td><td>±</td><td>K<sup>-</sup> p 1.2-1.7 GeV</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>&lt;0.04</td><td>ALSTON</td><td>62 HBC</td><td>±0</td><td>K<sup>-</sup> p 1.15 GeV/c</td></tr><tr><td>0.04 ± 0.04</td><td>BASTIEN</td><td>61 HBC</td><td>±</td><td></td></tr></tbody></table>

### $\Gamma(\Lambda\gamma)/\Gamma(\Lambda\pi)$

This ratio is of course for $\Sigma(1385)^0 \rightarrow \Lambda\gamma$ and $\Lambda\pi^0$.

<table><thead><tr><th>VALUE (units 10<sup>-2</sup>)</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>1.43<sup>+0.15</sup><sub>-0.13</sub></strong> OUR AVERAGE</td><td></td><td></td><td></td><td></td></tr><tr><td>1.42±0.12<sup>+0.11</sup><sub>-0.07</sub></td><td>624 ± 25</td><td>KELLER</td><td>11 CLAS</td><td>γp → K<sup>+</sup>Λγ, Eγ 1.6-3.8 GeV</td></tr><tr><td>1.53±0.39<sup>+0.15</sup><sub>-0.24</sub></td><td>61</td><td>TAYLOR</td><td>05 CLAS</td><td>γp → K<sup>+</sup>Λγ</td></tr></tbody></table>

### $\Gamma(\Sigma^+\gamma)/\Gamma(\Sigma\pi)$

This ratio is for $\Sigma(1385)^+ \rightarrow \Sigma^+\gamma$ over $\Sigma(1385)^+ \rightarrow \Sigma\pi$.

<table><thead><tr><th>VALUE (%)</th><th>DOCUMENT ID</th><th>TECN</th><th>CHG</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>5.98±1.11<sup>+0.27</sup><sub>-0.61</sub></strong></td><td>11 KELLER</td><td>12 CLAS</td><td>γp → K<sup>0</sup>Σ(1385)<sup>+</sup></td><td></td></tr></tbody></table>

<table><thead><tr><th colspan="6">Γ(Σ<sup>-</sup>γ)/Γ<sub>total</sub></th></tr><tr><th>VALUE</th><th>EVTS</th><th>DOCUMENT ID</th><th>TECN</th><th>CHG</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>&lt;2.4 × 10<sup>-4</sup></strong></td><td>90</td><td>12 MOLCHANOV</td><td>04 SELX</td><td>-</td><td>$\Sigma^-$ Pb → Σ(1385)<sup>-</sup><br>Pb, 600 GeV</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>&lt;6.1 × 10<sup>-4</sup></td><td>90</td><td>13 ARIK</td><td>77 SPEC</td><td>-</td><td>$\Sigma^-$ Pb → Σ(1385)<sup>-</sup><br>Pb, 23 GeV</td></tr></tbody></table>

### $(\Gamma_f\Gamma_f)^{1/2}/\Gamma_{\text{total}}$ in $N\bar{K} \rightarrow \Sigma(1385) \rightarrow \Lambda\pi$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>CHG</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.586 ± 0.319</td><td>14 DEVENISH</td><td>74b 0</td><td>Fixed-t dispersion rel.</td></tr></tbody></table>

### $\Sigma(1385)$ FOOTNOTES

1. From fit to inclusive $\Lambda\pi$ spectrum.

2. Includes data of HOLMGREN 77.

3. The errors are statistical only. The resolution is not unfolded.

4. The error is enlarged to $\Gamma/\sqrt{N}$. See the note on the $K^*(892)$ mass in the 1984 edition.

5. From a fit to $\Lambda\pi^0$ with the width fixed at 34 MeV.

6. From fit to inclusive $\Lambda\pi^0$ spectrum with the width fixed at 40 MeV.

7. Redundant with data in the mass Listings.

8. Results from $\Lambda\pi^+\pi^-$ and $\Lambda\pi^+\pi^-\pi^0$ combined by this.

9. The error is enlarged to $4\sqrt{N}$. See the note on the $K^*(892)$ mass in the 1984 edition.

10. Consistent with +, 0, and - widths equal.

11. KELLER 12 gives $\Gamma(\Sigma^+\gamma)/\Gamma(\Sigma^+\pi^0) = (11.95 \pm 2.21)^{+0.53}_{-1.21}\%$, using 1/2 our total $\Sigma(1385) \rightarrow \Sigma^+\pi^0$. We divide the KELLER 12 value by two.

12. We calculate this from the MOLCHANOV 04 upper limit of 9.5 keV on the $\Sigma^-\gamma$ width.

13. We calculate this from the ARIK 77 upper limit of 24 keV on the $\Sigma^-\gamma$ width.

14. An extrapolation of the parametrized amplitude below threshold.

### $\Sigma(1385)$ REFERENCES

<table><tbody><tr><td>LEE</td><td>21A PR D103 052005</td><td>J.Y. Lee et al.</td><td>(BELLE Collab.)</td></tr><tr><td>AGAKISHEV</td><td>12 PR C85 035203</td><td>G. Agakishiev et al.</td><td>(HADES Collab.)</td></tr><tr><td>KELLER</td><td>12 PR D85 052004</td><td>D. Keller et al.</td><td>(JLab CLAS Collab.)</td></tr><tr><td>KELLER</td><td>11 PR D83 072004</td><td>D. Keller et al.</td><td>(JLab CLAS Collab.)</td></tr><tr><td>TAYLOR</td><td>05 PR C71 056409</td><td>S. Taylor et al.</td><td>(JLab CLAS Collab.)</td></tr><tr><td>Also</td><td>PR C72 039902 (errat.)</td><td>S. Taylor et al.</td><td>(JLab CLAS Collab.)</td></tr><tr><td>MOLCHANOV</td><td>04 PL B590 161</td><td>V.V. Molchanov et al.</td><td>(FNAL SELEX Collab.)</td></tr><tr><td>BAUBILLIER</td><td>84 ZPHY C23 213</td><td>M. Baubillier et al.</td><td>(BIRM, CERN, GLAS+)</td></tr><tr><td>PDG</td><td>84 RMP 56 51</td><td>C.G. Wohl et al.</td><td>(LBL, CIT, CERN)</td></tr><tr><td>AGUILAR...</td><td>81D AFS A77 144</td><td>M. Aguilar-Benitez, J. Salicio</td><td>(MADR)</td></tr><tr><td>BAKER</td><td>80 NP B166 207</td><td>P.A. Baker et al.</td><td>(LOIC)</td></tr><tr><td>BAUBILLIER</td><td>79B NP B148 18</td><td>M. Baubillier et al.</td><td>(BIRM, CERN, GLAS+)</td></tr><tr><td>CAUTIS</td><td>79 NP B156 507</td><td>C.V. Cautis et al.</td><td>(SLAC)</td></tr><tr><td>SUGAHARA</td><td>79B NP B156 237</td><td>R. Sugahara et al.</td><td>(KEK, OSKC, KINK)</td></tr><tr><td>CAMERON</td><td>78 NP B143 189</td><td>W. Cameron et al.</td><td>(RHEL, LOIC)</td></tr><tr><td>DIONISI</td><td>78B PL 78B 154</td><td>C. Dionisi, R. Armenteros, J. Diaz</td><td>(CERN, AMST+)</td></tr><tr><td>ARIK</td><td>77 PRL 38 1000</td><td>E. Arik et al.</td><td>(PITT, BNL, MASA)</td></tr><tr><td>BARREIRO</td><td>77B NP B126 319</td><td>F. Barreiro et al.</td><td>(CERN, AMST, NIJM)</td></tr><tr><td>HOLMGREN</td><td>77 NP B119 261</td><td>S.O. Holmgren et al.</td><td>(CERN, AMST, NIJM)</td></tr><tr><td>BARDADIN...</td><td>75 NP B98 418</td><td>M. Bardadin-Obtwinowska et al.</td><td>(SACL, EPOL+)</td></tr><tr><td>BERTHON</td><td>74 NC 21A 146</td><td>A. Berthon et al.</td><td>(CDEF, RHEL, SACL+)</td></tr><tr><td>BORENSTEIN</td><td>74 PR D9 3006</td><td>S.R. Borenstein et al.</td><td>(BNL, MICH)</td></tr></tbody></table>
<table><tbody><tr><td>DEVENISH</td><td>74B</td><td>NP B81, 330</td><td>R.C.E. Devenish, C.D. Froggatt, B.R. Martin</td><td>(DESY+)</td></tr><tr><td>LICHTENBERG</td><td>74</td><td>PR D10, 3865</td><td>D.B. Lichtenberg</td><td>(IND)</td></tr><tr><td>Also</td><td></td><td>Private Comm.</td><td>D.B. Lichtenberg</td><td>(IND)</td></tr><tr><td>HABIBI</td><td>73</td><td>Thesis Nevis 199</td><td>M. Habibi</td><td>(COLU)</td></tr><tr><td>Also</td><td></td><td>Purdue Conf. 387</td><td>C. Baltay et al.</td><td>(COLU, BING)</td></tr><tr><td>MAST</td><td>73</td><td>PR D7, 3212</td><td>T.S. Mast et al.</td><td>(LBL) UP</td></tr><tr><td>Also</td><td></td><td>PR D7, 5</td><td>T.S. Mast et al.</td><td>(LBL) UP</td></tr><tr><td>THOMAS</td><td>73</td><td>NP B56, 15</td><td>D.W. Thomas et al.</td><td>(CMU) JP</td></tr><tr><td>AGUILAR-...</td><td>72B</td><td>PR D6, 29</td><td>M. Aguilar-Benitez et al.</td><td>(BNL)</td></tr><tr><td>COLLEY</td><td>71B</td><td>NP B31, 61</td><td>D.C. Colley et al.</td><td>(BIRM, EDIN, GLAS+)</td></tr><tr><td>AGUILAR-...</td><td>70B</td><td>PRL 25, 58</td><td>M. Aguilar-Benitez et al.</td><td>(BNL, SYRA)</td></tr><tr><td>PAN</td><td>69</td><td>PRL 23, 808</td><td>Y.L. Pan, F.L. Forman</td><td>(PENN) I</td></tr><tr><td>SIEGEL</td><td>67</td><td>Thesis UCRL 18041</td><td>D.M. Siegel</td><td>(LRL)</td></tr><tr><td>BIRMINGHAM</td><td>66</td><td>PR 152, 1148</td><td>M. Haque et al.</td><td>(BIRM, GLAS, LOIC, OXF+)</td></tr><tr><td>LONDON</td><td>66</td><td>PR 143, 1034</td><td>G.W. London et al.</td><td>(BNL, SYRA) J</td></tr><tr><td>ARMENTEROS</td><td>65B</td><td>PL 19, 75</td><td>R. Armenteros et al.</td><td>(CERN, HEID, SACL)</td></tr><tr><td>SMITH</td><td>65</td><td>Thesis UCLA</td><td>L.T. Smith</td><td>(UCLA)</td></tr><tr><td>COOPER</td><td>64</td><td>PL 8, 365</td><td>W.A. Cooper et al.</td><td>(CERN, AMST)</td></tr><tr><td>HUWE</td><td>64</td><td>Thesis UCRL 11291</td><td>D.O. Huwe</td><td>(LRL) JP</td></tr><tr><td>Also</td><td></td><td>PR 181, 1824</td><td>D.O. Huwe</td><td>(LRL)</td></tr><tr><td>CURTIS</td><td>63</td><td>PR 132, 1771</td><td>L.J. Curtis et al.</td><td>(MICH) J</td></tr><tr><td>ALSTON</td><td>62</td><td>CERN Conf. 311</td><td>M.H. Alston et al.</td><td>(LRL)</td></tr><tr><td>BASTIEN</td><td>61</td><td>PRL 6, 702</td><td>P.L. Bastien, M. Ferro-Luzzi, A.H. Rosenfeld</td><td>(LRL)</td></tr><tr><td>DAHL</td><td>61</td><td>PRL 6, 142</td><td>O.J. Dahl et al.</td><td>(LRL)</td></tr><tr><td>ELY</td><td>61</td><td>PRL 7, 461</td><td>R.P. Ely et al.</td><td>(LRL) J</td></tr><tr><td>ALSTON</td><td>60</td><td>PRL 5, 520</td><td>M.H. Alston et al.</td><td>(LRL) I</td></tr></tbody></table>

$$ \Sigma(1580) 3/2^{-} $$

$$ I(J^P) = 1(\frac{3}{2}^{-}) \text{ Status: } * $$

OMITTED FROM SUMMARY TABLE

Seen in the isospin-1 $\overline{K}N$ cross section at BNL (LI 73, CARROLL 76) and in a partial-wave analysis of $\overline{K}^- p \to \Lambda\pi^0$ for c.m. energies 1560-1600 MeV by LITCHFIELD 74. LITCHFIELD 74 finds $J^P = 3/2^-$. Not seen by ENGLER 78, CAMERON 78C, OLMSTED 04, nor by PRAKHOV 04.

Neither ZHANG 13A nor SARANTSEV 19 see any evidence for this state.

$\Sigma(1580)$ POLE POSITION

REAL PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 1607^{+13}_{-11} \qquad 1 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

¹ From the preferred solution A in KAMANO 15. Solution B reports $M = 1492^{+4}_{-7}$ MeV.

-2xIMAGINARY PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 253^{+30}_{-18} \qquad 2 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

² From the preferred solution A in KAMANO 15. Solution B reports $M = 138^{+8}_{-14}$ MeV.

$\Sigma(1580)$ POLE RESIDUES

The "normalized residue" is the residue divided by $\Gamma_{pole}/2$.

Normalized residue in $N\bar{K} \to \Sigma(1580) \to N\bar{K}$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.00778 \qquad 51 \qquad 3 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

³ From the preferred solution A in KAMANO 15.

Normalized residue in $N\bar{K} \to \Sigma(1580) \to \Sigma\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.0625 \qquad -6 \qquad 4 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

⁴ From the preferred solution A in KAMANO 15.

Normalized residue in $N\bar{K} \to \Sigma(1580) \to \Lambda\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.059 \qquad 156 \qquad 5 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

⁵ From the preferred solution A in KAMANO 15.

Normalized residue in $N\bar{K} \to \Sigma(1580) \to \Sigma(1385)\pi$, S-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.0368 \qquad -18 \qquad 6 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

⁶ From the preferred solution A in KAMANO 15.

Normalized residue in $N\bar{K} \to \Sigma(1580) \to \Sigma(1385)\pi$, D-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.0103 \qquad 123 \qquad 7 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

⁷ From the preferred solution A in KAMANO 15.

$\Sigma(1580)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

$\approx 1580$ OUR ESTIMATE

$$ 1583 \pm 4 \qquad 8 \text{ CARROLL} \qquad 76 \text{ DPWA Isospin-1 total } \sigma $$

$$ 1582 \pm 4 \qquad 9 \text{ LITCHFIELD} \qquad 74 \text{ DPWA } K^- p \to \Lambda\pi^0 $$

$$ 8 \text{ CARROLL} \quad 76 \text{ sees a total-cross-section bump with } (J+1/2) \Gamma_{el} / \Gamma_{total} = 0.06. $$

$$ 9 \text{ The main effect observed by LITCHFIELD 74 is in the } \Lambda\pi \text{ final state; the } \overline{K}N \text{ and } \Sigma\pi \text{ couplings are estimated from a multichannel fit including total-cross-section data of LI 73.} $$

$\Sigma(1580)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

$$ 15 \qquad 10 \text{ CARROLL} \qquad 76 \text{ DPWA Isospin-1 total } \sigma $$

$$ 11 \pm 4 \qquad 11 \text{ LITCHFIELD} \qquad 74 \text{ DPWA } K^- p \to \Lambda\pi^0 $$

$$ 10 \text{ CARROLL} \quad 76 \text{ sees a total-cross-section bump with } (J+1/2) \Gamma_{el} / \Gamma_{total} = 0.06. $$

$$ 11 \text{ The main effect observed by LITCHFIELD 74 is in the } \Lambda\pi \text{ final state; the } \overline{K}N \text{ and } \Sigma\pi \text{ couplings are estimated from a multichannel fit including total-cross-section data of LI 73.} $$

$\Sigma(1580)$ DECAY MODES

<table><thead><tr><th></th><th>Mode</th></tr></thead><tbody><tr><td>Γ<sub>1</sub></td><td>$N\bar{K}$</td></tr><tr><td>Γ<sub>2</sub></td><td>$\Lambda\pi$</td></tr><tr><td>Γ<sub>3</sub></td><td>$\Sigma\pi$</td></tr><tr><td>Γ<sub>4</sub></td><td>$\Sigma(1385)\pi$, S-wave</td></tr><tr><td>Γ<sub>5</sub></td><td>$\Sigma(1385)\pi$, D-wave</td></tr><tr><td>Γ<sub>6</sub></td><td>$N\bar{K}^*(892)$, $S=1/2$, D-wave</td></tr><tr><td>Γ<sub>7</sub></td><td>$N\bar{K}^*(892)$, $S=3/2$, S-wave</td></tr><tr><td>Γ<sub>8</sub></td><td>$N\bar{K}^*(892)$, $S=3/2$, D-wave</td></tr></tbody></table>

$\Sigma(1580)$ BRANCHING RATIOS

See "Sign conventions for resonance couplings" in the Note on $\Lambda$ and $\Sigma$ Resonances.

$\Gamma(N\bar{K})/\Gamma_{total} \qquad \Gamma_1/\Gamma$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

$$ +0.03 \pm 0.01 \qquad 12 \text{ LITCHFIELD} \qquad 74 \text{ DPWA } \overline{K}N \text{ multichannel} $$

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.003 \qquad 13 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

$$ 12 \text{ The main effect observed by LITCHFIELD 74 is in the } \Lambda\pi \text{ final state; the } \overline{K}N \text{ and } \Sigma\pi \text{ couplings are estimated from a multichannel fit including total-cross-section data of LI 73.} $$

¹³ From the preferred solution A in KAMANO 15.

$\Gamma(\Lambda\pi)/\Gamma_{total} \qquad \Gamma_2/\Gamma$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.490 \qquad 14 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

¹⁴ From the preferred solution A in KAMANO 15.

$\Gamma(\Sigma\pi)/\Gamma_{total} \qquad \Gamma_3/\Gamma$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.387 \qquad 15 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

¹⁵ From the preferred solution A in KAMANO 15.

$\Gamma(\Sigma(1385)\pi, S-wave)/\Gamma_{total} \qquad \Gamma_4/\Gamma$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.12 \qquad 16 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

¹⁶ From the preferred solution A in KAMANO 15.

$\Gamma(\Sigma(1385)\pi, D-wave)/\Gamma_{total} \qquad \Gamma_5/\Gamma$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

$$ 0.001 \qquad 17 \text{ KAMANO} \qquad 15 \text{ DPWA Multichannel} $$

¹⁷ From the preferred solution A in KAMANO 15.
# Baryon Particle Listings

$$ \Sigma(1580), \Sigma(1620) $$

$$ \Gamma(N\bar{K}^*(892), S=1/2, D-wave)/\Gamma_{\text{total}} $$

$$ \Gamma_6/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

not seen

<table><tr><td><sup>18</sup>KAMANO</td><td>15</td><td>DPWA</td><td>Multichannel</td></tr></table>

¹⁹ From the preferred solution A in KAMANO 15.

$$ \Gamma(N\bar{K}^*(892), S=3/2, S-wave)/\Gamma_{\text{total}} $$

$$ \Gamma_7/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

not seen

<table><tr><td><sup>19</sup>KAMANO</td><td>15</td><td>DPWA</td><td>Multichannel</td></tr></table>

¹⁹ From the preferred solution A in KAMANO 15.

$$ \Gamma(N\bar{K}^*(892), S=3/2, D-wave)/\Gamma_{\text{total}} $$

$$ \Gamma_8/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

not seen

<table><tr><td><sup>20</sup>KAMANO</td><td>15</td><td>DPWA</td><td>Multichannel</td></tr></table>

²⁰ From the preferred solution A in KAMANO 15.

$$ (\Gamma_1\Gamma_3)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \rightarrow \Sigma(1580) \rightarrow \Lambda\pi \quad (\Gamma_1\Gamma_3)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>not seen</td><td>CAMERON</td><td>78c</td><td>HBC</td></tr><tr><td>not seen</td><td>ENGLER</td><td>78</td><td>HBC</td></tr><tr><td>+0.10±0.02</td><td>21 LITCHFIELD</td><td>74</td><td>DPWA</td></tr></tbody></table>

²¹ The main effect observed by LITCHFIELD 74 is in the $\Lambda\pi$ final state; the $\bar{K}N$ and $\Sigma\pi$ couplings are estimated from a multichannel fit including total-cross-section data of LI 73.

$$ (\Gamma_1\Gamma_3)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \rightarrow \Sigma(1580) \rightarrow \Sigma\pi \quad (\Gamma_1\Gamma_3)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>not seen</td><td>CAMERON</td><td>78c</td><td>HBC</td></tr><tr><td>not seen</td><td>ENGLER</td><td>78</td><td>HBC</td></tr><tr><td>+0.03±0.04</td><td>22 LITCHFIELD</td><td>74</td><td>DPWA</td></tr></tbody></table>

²² The main effect observed by LITCHFIELD 74 is in the $\Lambda\pi$ final state; the $\bar{K}N$ and $\Sigma\pi$ couplings are estimated from a multichannel fit including total-cross-section data of LI 73.

## Σ(1580) REFERENCES

<table><tr><td>SARANTSEV</td><td>19</td><td>EPJ A55 180</td></tr><tr><td>KAMANO</td><td>15</td><td>PR C92 025205</td></tr><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td></tr><tr><td>OLMSTED</td><td>04</td><td>PL B588 29</td></tr><tr><td>PRAKHOV</td><td>04</td><td>PR C69 042202</td></tr><tr><td>CAMERON</td><td>78C</td><td>NR B132 189</td></tr><tr><td>ENGLER</td><td>78</td><td>PR D18 3061</td></tr><tr><td>CARROLL</td><td>76</td><td>PRL 37 806</td></tr><tr><td>LITCHFIELD</td><td>74</td><td>PL 51B 509</td></tr><tr><td>LI</td><td>73</td><td>Purdue Conf. 283</td></tr></table>

<table><tr><td>A.V. Sarantsev et al.</td><td>(BONN, PNPI)</td></tr><tr><td>H. Kamano et al.</td><td>(ANL, OSAK)</td></tr><tr><td>H. Zhang et al.</td><td>(KSU)</td></tr><tr><td>J. Olmsted et al.</td><td>(BNL Crystal Ball Collab.)</td></tr><tr><td>S. Prakhov et al.</td><td>(BNL Crystal Ball Collab.)</td></tr><tr><td>W. Cameron et al.</td><td>(BGNA, EDIN, GLAS+)I</td></tr><tr><td>A. Engler et al.</td><td>(CMU, ANL)</td></tr><tr><td>A.S. Carroll et al.</td><td>(BNL)I</td></tr><tr><td>P.J. Litchfield</td><td>(CERN)IJP</td></tr><tr><td>K.K. Li</td><td>(BNL)I</td></tr></table>

$$ \Sigma(1620) 1/2^{-} $$

$$ I(J^P) = 1(\frac{1}{2}^-) \text{ Status: } * $$

OMITTED FROM SUMMARY TABLE

The $S_{11}$ state at 1697 MeV reported by VANHORN 75 is tentatively listed under the $\Sigma(1750)$. CARROLL 76 sees two bumps in the isospin-1 total cross section near this mass. GAO 12 sees no evidence for this resonance.

Production experiments are listed separately in the next entry.

## Σ(1620) POLE POSITION

### REAL PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>1680±8</strong></td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1501</td><td>ZHANG</td><td>13A</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></table>

### -2xIMAGINARY PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td><strong>39±11</strong></td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>171</td><td>ZHANG</td><td>13A</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></table>

## Σ(1620) POLE RESIDUE

The "normalized residue" is the residue divided by $\Gamma_{pole}/2$.

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow \Sigma\pi \quad \Gamma_1/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.14±0.03</td><td>-90 ± 25</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow \Lambda\pi \quad \Gamma_2/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.10±0.03</td><td>75 ± 20</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow \Xi K \quad \Gamma_1/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.02±0.01</td><td>120 ± 20</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow \Lambda(1520)\pi \quad \Gamma_2/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.12±0.05</td><td>140 ± 40</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow \Sigma(1385)\pi \quad \Gamma_3/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.015±0.010</td><td>155 ± 40</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow N\bar{K}^*(892), S-wave \quad \Gamma_4/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.05±0.04</td><td></td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow N\bar{K}^*(892), D-wave \quad \Gamma_5/\Gamma $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.01±0.01</td><td></td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \rightarrow \Sigma(1620) \rightarrow N\bar{K}^* \quad \Gamma_6/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.11+0.03@43+-20</td><td></td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

## Σ(1620) MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

### 1600 to 1650 (≈ 1620) OUR ESTIMATE

<table><tr><td>1681±6</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr><tr><td>1600±15</td><td>ZHANG</td><td>13A</td><td>DPWA K<sup>0</sup> N multichannel</td></tr><tr><td>1600±6</td><td>1 MORRIS</td><td>78</td><td>DPWA K<sup>-</sup> n → Λπ<sup>-</sup></td></tr><tr><td>1608±5</td><td>2 CARROLL</td><td>76</td><td>DPWA Isospin-1 total σ</td></tr><tr><td>1630±10</td><td>LANGBEIN</td><td>72</td><td>IPWA K<sup>0</sup> N multichannel</td></tr><tr><td>1620</td><td>KIM</td><td>71</td><td>DPWA K-matrix analysis</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1633±10</td><td>3 CARROLL</td><td>76</td><td>DPWA Isospin-1 total σ</td></tr></table>

## Σ(1620) WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

### 40 to 100 (≈ 70) OUR ESTIMATE

<table><tr><td>40±12</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr><tr><td>400±152</td><td>ZHANG</td><td>13A</td><td>DPWA K<sup>0</sup> N multichannel</td></tr><tr><td>87±19</td><td>1 MORRIS</td><td>78</td><td>DPWA K<sup>-</sup> n → Λπ<sup>-</sup></td></tr><tr><td>15</td><td>2 CARROLL</td><td>76</td><td>DPWA Isospin-1 total σ</td></tr><tr><td>65±20</td><td>LANGBEIN</td><td>72</td><td>IPWA K<sup>0</sup> N multichannel</td></tr><tr><td>40</td><td>KIM</td><td>71</td><td>DPWA K-matrix analysis</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>10</td><td>3 CARROLL</td><td>76</td><td>DPWA Isospin-1 total σ</td></tr></table>

## Σ(1620) DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>f</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N<bar>K</td><td>0.10 to 0.60</td></tr><tr><td>Γ<sub>2</sub> Λπ</td><td>(9.0 ± 3.0) %</td></tr><tr><td>Γ<sub>3</sub> Σπ</td><td>(17 ± 5) %</td></tr><tr><td>Γ<sub>4</sub> ΞK</td><td></td></tr><tr><td>Γ<sub>5</sub> Λ(1520)π</td><td>(10 ± 5) %</td></tr><tr><td>Γ<sub>6</sub> Σ(1385)π</td><td></td></tr></tbody></table>

## Σ(1620) BRANCHING RATIOS

$$ \Gamma(N\bar{K})/\Gamma_{\text{total}} \quad \Gamma_1/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.10 to 0.60 OUR ESTIMATE</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr><tr><td>0.11±0.03</td><td>ZHANG</td><td>13A</td><td>DPWA K<sup>0</sup> N multichannel</td></tr><tr><td>0.59±0.10</td><td>LANGBEIN</td><td>72</td><td>IPWA K<sup>0</sup> N multichannel</td></tr><tr><td>0.22±0.02</td><td>KIM</td><td>71</td><td>DPWA K-matrix analysis</td></tr></tbody></table>

$$ \Gamma(\Sigma\pi)/\Gamma_{\text{total}} \quad \Gamma_3/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.17±0.05</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \Gamma(\Lambda\pi)/\Gamma_{\text{total}} \quad \Gamma_2/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.09±0.03</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>

$$ \Gamma(\Xi K)/\Gamma_{\text{total}} \quad \Gamma_4/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>~ 0</td><td>SARANTSEV</td><td>19</td><td>DPWA K<sup>0</sup> N multichannel</td></tr></tbody></table>
### $\Gamma(\Lambda(1520)\pi)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.10±0.05</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

### $\Gamma(\Sigma(1385)\pi)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>&lt;0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

### $(\Gamma_1\Gamma_3)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1620) \to \Lambda\pi$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.12±0.02</td><td>1 MORRIS</td><td>78</td><td>DPWA K<sup>-</sup> n → Λπ<sup>-</sup></td></tr><tr><td>not seen</td><td>BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>0.15</td><td>KIM</td><td>71</td><td>DPWA K-matrix analysis</td></tr></tbody></table>

### $(\Gamma_1\Gamma_3)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1620) \to \Sigma\pi$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.32±0.03</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>not seen</td><td>HEPP</td><td>76B</td><td>DPWA K<sup>-</sup> N → Σπ</td></tr><tr><td>+0.40±0.06</td><td>LANGBEIN</td><td>72</td><td>IPWA K N multichannel</td></tr><tr><td>+0.08</td><td>KIM</td><td>71</td><td>DPWA K-matrix analysis</td></tr></tbody></table>

### $\Sigma(1620)$ FOOTNOTES

¹ MORRIS 78 obtains an equally good fit without including this resonance.

² Total cross-section bump with $(J+1/2) \Gamma_{\text{el}} / \Gamma_{\text{total}}$ is 0.06 seen by CARROLL 76.

³ Total cross-section bump with $(J+1/2) \Gamma_{\text{el}} / \Gamma_{\text{total}}$ is 0.04 seen by CARROLL 76.

### $\Sigma(1620)$ REFERENCES

<table><tr><td>SARANTSEV</td><td>19</td><td>EPJ A55 180</td><td>A.V. Sarantsev et al.</td><td>(BONN, PNPI)</td></tr><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td><td>H. Zhang et al.</td><td>(KSU)</td></tr><tr><td>GAO</td><td>12</td><td>PR C86 025201</td><td>P. Gao, J. Shi, B.S. Zou</td><td>(BHEP, BEUT)</td></tr><tr><td>Also</td><td></td><td>NP A867 41</td><td>P. Gao, B.S. Zou, A. Sibirtsev</td><td>(BHEP, BEUT+) IJP</td></tr><tr><td>MORRIS</td><td>78</td><td>PR D17 55</td><td>W.A. Morris et al.</td><td>(FSU) IJP</td></tr><tr><td>CARROLL</td><td>76</td><td>PRL 37 806</td><td>A.S. Carroll et al.</td><td>(BNL) I</td></tr><tr><td>HEPP</td><td>76B</td><td>PL 65B 487</td><td>V. Hepp et al.</td><td>(CERN, HEIDH, MPIM) IJP</td></tr><tr><td>BAILLON</td><td>75</td><td>NP B94 39</td><td>P.H. Baillon, P.J. Litchfield</td><td>(CERN, RHEL) IJP</td></tr><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td><td>A.J. van Horn</td><td>(LBL) IJP</td></tr><tr><td>Also</td><td></td><td>NP B87 157</td><td>A.J. van Horn</td><td>(LBL) IJP</td></tr><tr><td>LANGBEIN</td><td>72</td><td>NP B47 477</td><td>W. Langbein, F. Wagner</td><td>(MPIM) IJP</td></tr><tr><td>KIM</td><td>71</td><td>PRL 27 356</td><td>J.K. Kim</td><td>(HARV) IJP</td></tr><tr><td>Also</td><td></td><td>Duke Conf. 161</td><td>J.K. Kim</td><td>(HARV) IJP</td></tr><tr><td>Hyperon Resonances, 1970</td><td></td><td></td><td></td><td></td></tr></table>

$$ \Sigma(1660) 1/2^+ $$

$$ I(J^P) = 1(\frac{1}{2}^+) \text{ Status: ***} $$

For results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters **111B** 1 (1982).

### $\Sigma(1660)$ POLE POSITION

#### REAL PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>1585±20</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1547<sup>+111</sup><sub>-59</sub></td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15. Solution B reports $M = 1457^{+5}_{-1}$ MeV.

#### $-2 \times \text{IMAGINARY PART}$

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>290<sup>+140</sup><sub>-40</sub></td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>183<sup>+86</sup><sub>-78</sub></td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15. Solution B reports $\Gamma = 78^{+2}_{-8}$ MeV.

### $\Sigma(1660)$ POLE RESIDUES

The normalized residue is the residue divided by $\Gamma_{\text{pole}}/2$.

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to N\bar{K}$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.07</td><td>±0.03</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.0247</td><td>168</td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to \Sigma\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.17±0.04</td><td>150±20</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.16</td><td>78</td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to \Lambda\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.16</td><td>±0.05</td><td>0 ±25</td><td>SARANTSEV</td><td>19 DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.0614</td><td>-84</td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to \Sigma\sigma$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.14±0.06</td><td>-150 ±30</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to \Sigma(1385)\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.06±0.03</td><td>-90 ±25</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.0513</td><td>-44</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to \Lambda(1405)\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.06±0.03</td><td>-90 ±25</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

#### Normalized residue in $N\bar{K} \to \Sigma(1660) \to \Lambda(1520)\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.04±0.02</td><td>5 ±20</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

### $\Sigma(1660)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>1640 to 1680 (≈ 1660) OUR ESTIMATE</strong></td></tr><tr><td>1665 ±20</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>1633 ±3</td><td>GAO</td><td>12</td><td>DPWA K N → Λπ</td></tr><tr><td>1665.1±11.2</td><td>1 KOISO</td><td>85</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td>1670 ±10</td><td>GOPAL</td><td>80</td><td>DPWA K N → K N</td></tr><tr><td>1679 ±10</td><td>ALSTON...</td><td>78</td><td>DPWA K N → K N</td></tr><tr><td>1668 ±25</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>1670 ±20</td><td>KANE</td><td>74</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>1676 ±15</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>1565 or 1597</td><td>2 MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>1660 ±30</td><td>3 BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>1671 ±2</td><td>4 PONTE</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr></tbody></table>

¹ The evidence of KOISO 85 is weak.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

³ From solution 1 of BAILLON 75; not present in solution 2.

⁴ From solution 2 of PONTE 75; not present in solution 1.

### $\Sigma(1660)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>100 to 300 (≈ 200) OUR ESTIMATE</strong></td></tr><tr><td>300 ±140</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>121 ±4</td><td>GAO</td><td>12</td><td>DPWA K N → Λπ</td></tr><tr><td>81.5 ±22.2</td><td>1 KOISO</td><td>85</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td>152 ±20</td><td>GOPAL</td><td>80</td><td>DPWA K N → K N</td></tr><tr><td>38 ±10</td><td>ALSTON...</td><td>78</td><td>DPWA K N → K N</td></tr><tr><td>230 ±165</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>250 ±110</td><td>KANE</td><td>74</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>120 ±20</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>202 or 217</td><td>2 MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>80 ±40</td><td>3 BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>81 ±10</td><td>4 PONTE</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr></tbody></table>

¹ The evidence of KOISO 85 is weak.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

³ From solution 1 of BAILLON 75; not present in solution 2.

⁴ From solution 2 of PONTE 75; not present in solution 1.

### $\Sigma(1660)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction ($\Gamma_f/\Gamma$)</th></tr></thead><tbody><tr><td>$\Gamma_1$</td><td>0.05 to 0.15 (≈ 010)</td></tr><tr><td>$\Gamma_2$</td><td>(35 ±12) %</td></tr><tr><td>$\Gamma_3$</td><td>(37 ±10) %</td></tr><tr><td>$\Gamma_4$</td><td>(20 ± 8) %</td></tr><tr><td>$\Gamma_5$</td><td>$\Sigma(1385)\pi$</td></tr><tr><td>$\Gamma_6$</td><td>$\Lambda(1405)\pi$</td></tr><tr><td>$\Gamma_7$</td><td>$\Lambda(1520)\pi$</td></tr></tbody></table>
## $\Sigma(1660)$ BRANCHING RATIOS

See "Sign conventions for resonance couplings" in the Note on $\Lambda$ and $\Sigma$ Resonances.

$$ \Gamma(N\bar{K})/\Gamma_{\text{total}} \qquad \Gamma_1/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>0.05 to 0.15 (≈ 0.10) OUR ESTIMATE</strong></td></tr><tr><td>0.07 ±0.03</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>0.12 ±0.03</td><td>GOPAL</td><td>80</td><td>DPWA $\bar{K}N \to \bar{K}N$</td></tr><tr><td>0.10 ±0.05</td><td>ALSTON...</td><td>78</td><td>DPWA $\bar{K}N \to \bar{K}N$</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.005</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>&lt;0.04</td><td>GOPAL</td><td>77</td><td>DPWA See GOPAL 80</td></tr><tr><td>0.27 or 0.29</td><td>2 MARTIN</td><td>77</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$ \Gamma(\Lambda\pi)/\Gamma_{\text{total}} \qquad \Gamma_2/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.35 ±0.12</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td></tr><tr><td>0.128</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

$$ \Gamma(\Sigma\pi)/\Gamma_{\text{total}} \qquad \Gamma_3/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.37 ±0.10</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td></tr><tr><td>0.865</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

$$ \Gamma(\Sigma\sigma)/\Gamma_{\text{total}} \qquad \Gamma_4/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.20 ±0.08</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

$$ \Gamma(\Sigma(1385)\pi)/\Gamma_{\text{total}} \qquad \Gamma_5/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td></tr><tr><td>0.001</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

$$ \Gamma(\Lambda(1405)\pi)/\Gamma_{\text{total}} \qquad \Gamma_6/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.04 ±0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

$$ \Gamma(\Lambda(1520)\pi)/\Gamma_{\text{total}} \qquad \Gamma_7/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>&lt;0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

$$ (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1660) \to \Lambda\pi \qquad (\Gamma_1\Gamma_2)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>-0.064 +0.005<br/>-0.003</td><td>GAO</td><td>12</td><td>DPWA $\bar{K}N \to \Lambda\pi$</td></tr><tr><td>&lt; 0.04</td><td>GOPAL</td><td>77</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>0.12 +0.12<br/>-0.04</td><td>VANHORN</td><td>75</td><td>DPWA $\bar{K}^-p \to \Lambda\pi^0$</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>-0.10 or -0.11</td><td>1 MARTIN</td><td>77</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>-0.04 ±0.02</td><td>2 BAILLON</td><td>75</td><td>DPWA $\bar{K}N \to \Lambda\pi$</td></tr><tr><td>+0.16 ±0.01</td><td>3 PONTE</td><td>75</td><td>DPWA $\bar{K}^-p \to \Lambda\pi^0$</td></tr></tbody></table>

¹ The two MARTIN 77 values are from the $\Lambda$-matrix pole and from a Breit-Wigner fit.

² From solution 1 of BAILLON 75; not present in solution 2.

³ From solution 2 of PONTE 75; not present in solution 1.

$$ (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1660) \to \Sigma\pi \qquad (\Gamma_1\Gamma_3)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>-0.13 ±0.04</td><td>1 KOISO</td><td>85</td><td>DPWA $\bar{K}^-p \to \Sigma\pi$</td></tr><tr><td>-0.16 ±0.03</td><td>GOPAL</td><td>77</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>-0.11 ±0.01</td><td>KANE</td><td>74</td><td>DPWA $\bar{K}^-p \to \Sigma\pi$</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>-0.34 or -0.37</td><td>2 MARTIN</td><td>77</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>not seen</td><td>HEPP</td><td>76B</td><td>DPWA $\bar{K}^-N \to \Sigma\pi$</td></tr></tbody></table>

¹ The evidence of KOISO 85 is weak.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

## $\Sigma(1660)$ REFERENCES

<table><tbody><tr><td>SARANTSEV</td><td>19</td><td>EPJ A55 180</td><td>A.V. Sarantsev et al.</td><td>(BONN, PNPI)</td></tr><tr><td>KAMANO</td><td>15</td><td>PR C92 025205</td><td>H. Kamano et al.</td><td>(ANL, OSAK)</td></tr><tr><td>GAD</td><td>12</td><td>PR C86 025201</td><td>P. Gao, J. Shi, B.S. Zou</td><td>(BHEP, BEIJT)</td></tr><tr><td>Also</td><td></td><td>NP A867 41</td><td>P. Gao, B.S. Zou, A. Sibirtsev</td><td>(BHEP, BEIJT+)</td></tr><tr><td>KOISO</td><td>85</td><td>NP A433 619</td><td>H. Koiso et al.</td><td>(TOKY, MASA)</td></tr><tr><td>PDG</td><td>82</td><td>PL 111B 1</td><td>M. Roos et al.</td><td>(HELS, CIT, CERN)</td></tr><tr><td>GOPAL</td><td>80</td><td>Toronto Conf. 159</td><td>G.P. Gopal</td><td>(RHEL) UP</td></tr><tr><td>ALSTON...</td><td>78</td><td>PR D18 182</td><td>M. Alston-Garnjost et al.</td><td>(LBL, MTHO+) UP</td></tr><tr><td>Also</td><td></td><td>PRL 38 1007</td><td>M. Alston-Garnjost et al.</td><td>(LBL, MTHO+) UP</td></tr></tbody></table>

<table><tbody><tr><td>GOPAL</td><td>77</td><td>NP B119 362</td><td>G.P. Gopal et al.</td><td>(LOIC, RHEL) UP</td></tr><tr><td>MARTIN</td><td>77</td><td>NP B127 349</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC+) UP</td></tr><tr><td>Also</td><td></td><td>NP B126 266</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC)</td></tr><tr><td>Also</td><td></td><td>NP B126 285</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC) UP</td></tr><tr><td>HEPP</td><td>76B</td><td>PL 65B 487</td><td>V. Hepp et al.</td><td>(CERN, HEIDH, MPIM) UP</td></tr><tr><td>BAILLON</td><td>75</td><td>NP B94 39</td><td>P.H. Baillon, P.J. Litchfield</td><td>(CERN, RHEL) UP</td></tr><tr><td>PONTE</td><td>75</td><td>PR D12 2597</td><td>R.A. Ponte et al.</td><td>(MASA, TENN, UCR) UP</td></tr><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td><td>A.J. van Horn</td><td>(LBL) UP</td></tr><tr><td>Also</td><td></td><td>NP B87 157</td><td>A.J. van Horn</td><td>(LBL) UP</td></tr><tr><td>KANE</td><td>74</td><td>LBL-2452</td><td>D.F. Kane</td><td>(LBL) UP</td></tr></tbody></table>

$$ \Sigma(1670) 3/2^{-} $$

$$ I(J^P) = 1(\frac{3}{2}^{-}) \quad \text{Status: } \mathbf{***} $$

For most results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters **111B** 1 (1982).

Results from production experiments are listed separately in the next entry.

## $\Sigma(1670)$ POLE POSITION

### REAL PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>1655 to 1675 (≈ 1662) OUR ESTIMATE</strong></td></tr><tr><td>1661 ±3</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>1669 -7/7</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>1674</td><td>ZHANG</td><td>13A</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

### $-2\times$IMAGINARY PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>-2\times 45 to 65 (≈ 55) OUR ESTIMATE</strong></td></tr><tr><td>52 ± 6</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>64 +10/14</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>54</td><td>ZHANG</td><td>13A</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

## $\Sigma(1670)$ POLE RESIDUES

The normalized residue is the residue divided by $\Gamma_{pole}/2$.

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to N\bar{K}$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.10 ±0.02</td><td>-31 ± 12</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td><td></td></tr><tr><td>0.129</td><td>-20</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to \Sigma\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.25 ±0.05</td><td>-25 ± 10</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td><td></td></tr><tr><td>0.249</td><td>-21</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to \Lambda\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.09 ±0.03</td><td>-52 ± 12</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td><td></td></tr><tr><td>0.0818</td><td>-7</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to \Xi K$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.02 ±0.01</td><td>160 ± 20</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to \Sigma\sigma$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.08 ±0.03</td><td>-25 ± 15</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to \Sigma(1385)\pi$, $S$-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td><td></td></tr><tr><td>0.228</td><td>167</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

<table><tbody><tr><td>0.0915</td><td>141</td><td>KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \to \Sigma(1670) \to \Sigma(1385)\pi$, $D$-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td><td></td><td></td><td></td><td></td></tr><tr><td>0.0915</td><td>141</td><td>KAMANO</td><td>15</td><td>DPWA $\bar{K}N$ multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.
$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to \Lambda(1405)\pi $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.03 ± 0.02</td><td>160 ± 15</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to \Lambda(1520)\pi, \text{ P-wave} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.04 ± 0.02</td><td>120 ± 20</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to \Lambda(1520)\pi, \text{ F-wave} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.01 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to \Delta\bar{K}, \text{ S-wave} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.01 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to N\bar{K}^*(892), \text{ S=3/2, S-wave} $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.05 + 0.03 @ 50 + 60</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to N\bar{K}^*(892), \text{ S=3/2, D-wave} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.01 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1670) \to N\bar{K}^*(892), \text{ S=1/2, D-wave} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.03 ± 0.02</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

## $\Sigma(1670)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

### 1665 to 1685 (≈ 1675) OUR ESTIMATE

<table><thead><tr><th></th><th></th><th></th><th></th><th></th></tr></thead><tbody><tr><td>1665</td><td>± 3</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>1678</td><td>± 2</td><td>ZHANG</td><td>13A</td><td>DPWA K N multichannel</td></tr><tr><td>1673</td><td>± 1</td><td>GAO</td><td>12</td><td>DPWA K N → Λπ</td></tr><tr><td>1665.1</td><td>± 4.1</td><td>KOISO</td><td>85</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td>1682</td><td>± 5</td><td>GOPAL</td><td>80</td><td>DPWA K N → K N</td></tr><tr><td>1679</td><td>± 10</td><td>ALSTON-</td><td>78</td><td>DPWA K N → K N</td></tr><tr><td>1670</td><td>± 5</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>1670</td><td>± 6</td><td>HEPP</td><td>76B</td><td>DPWA K<sup>-</sup> N → Σπ</td></tr><tr><td>1685</td><td>± 20</td><td>BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>1659</td><td>+12</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>1670</td><td>± 2</td><td>KANE</td><td>74</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><thead><tr><th></th><th></th><th></th><th></th><th></th></tr></thead><tbody><tr><td>1667</td><td>or 1668</td><td>1 MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>1650</td><td></td><td>DEBELLEFON</td><td>76</td><td>IPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>1671</td><td>± 3</td><td>PONTE</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup> (sol. 1)</td></tr><tr><td>1655</td><td>± 2</td><td>PONTE</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup> (sol. 2)</td></tr></tbody></table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

## $\Sigma(1670)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

### 40 to 100 (≈ 70) OUR ESTIMATE

<table><thead><tr><th></th><th></th><th></th><th></th><th></th></tr></thead><tbody><tr><td>54</td><td>± 6</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>55</td><td>± 4</td><td>ZHANG</td><td>13A</td><td>DPWA K N multichannel</td></tr><tr><td>52</td><td>+ 5</td><td>GAO</td><td>12</td><td>DPWA K N → Λπ</td></tr><tr><td>65.0</td><td>± 7.3</td><td>KOISO</td><td>85</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td>79</td><td>± 10</td><td>GOPAL</td><td>80</td><td>DPWA K N → K N</td></tr><tr><td>56</td><td>± 20</td><td>ALSTON-</td><td>78</td><td>DPWA K N → K N</td></tr><tr><td>50</td><td>± 5</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>56</td><td>± 3</td><td>HEPP</td><td>76B</td><td>DPWA K<sup>-</sup> N → Σπ</td></tr><tr><td>85</td><td>± 25</td><td>BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>32</td><td>± 11</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>79</td><td>± 6</td><td>KANE</td><td>74</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><thead><tr><th></th><th></th><th></th><th></th><th></th></tr></thead><tbody><tr><td>46</td><td>or 46</td><td>1 MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>80</td><td></td><td>DEBELLEFON</td><td>76</td><td>IPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>44</td><td>± 11</td><td>PONTE</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup> (sol. 1)</td></tr><tr><td>76</td><td>± 5</td><td>PONTE</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup> (sol. 2)</td></tr></tbody></table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

## $\Sigma(1670)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>j</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N K̄</td><td>0.06 to 0.12</td></tr><tr><td>Γ<sub>2</sub> Λπ</td><td>5–15 %</td></tr><tr><td>Γ<sub>3</sub> Σπ</td><td>30–60 %</td></tr><tr><td>Γ<sub>4</sub> Λππ</td><td></td></tr><tr><td>Γ<sub>5</sub> Σππ</td><td></td></tr><tr><td>Γ<sub>6</sub> Σσ</td><td>(7.0 ± 3.0) %</td></tr></tbody></table>

<table><tbody><tr><td>Γ<sub>7</sub> Σ(1385)π</td></tr><tr><td>Γ<sub>8</sub> Σ(1385)π, S-wave</td></tr><tr><td>Γ<sub>9</sub> Σ(1385)π, D-wave</td></tr><tr><td>Γ<sub>10</sub> N K̄* (892), S=1/2, D-wave</td></tr><tr><td>Γ<sub>11</sub> N K̄* (892), S=3/2, S-wave</td></tr><tr><td>Γ<sub>12</sub> N K̄* (892), S=3/2, D-wave</td></tr><tr><td>Γ<sub>13</sub> Λ(1405)π</td></tr><tr><td>Γ<sub>14</sub> Λ(1520)π</td></tr></tbody></table>

## $\Sigma(1670)$ BRANCHING RATIOS

See “Sign conventions for resonance couplings” in the Note on $\Lambda$ and $\Sigma$ Resonances.

$$ \Gamma(N\bar{K})/\Gamma_{\text{total}} \qquad \Gamma_1/\Gamma $$

### 0.06 to 0.12 OUR ESTIMATE

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.10 ± 0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>0.062 ± 0.007</td><td>ZHANG</td><td>13A</td><td>DPWA K N multichannel</td></tr><tr><td>0.10 ± 0.03</td><td>GOPAL</td><td>80</td><td>DPWA K N → K N</td></tr><tr><td>0.11 ± 0.03</td><td>ALSTON-</td><td>78</td><td>DPWA K N → K N</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.121</td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr><tr><td>0.08 ± 0.03</td><td>GOPAL</td><td>77</td><td>DPWA See GOPAL 80</td></tr><tr><td>0.07 or 0.07</td><td>2 MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr></tbody></table>

¹ From the preferred solution A in KAMANO 15.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$ \Gamma(\Lambda\pi)/\Gamma_{\text{total}} \qquad \Gamma_2/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.09 ± 0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.058</td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

$$ \Gamma(\Sigma\pi)/\Gamma_{\text{total}} \qquad \Gamma_3/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.70 ± 0.15</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.465</td><td>1 KAMANO</td><td>15</td><td>DPWA K N multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

$$ \Gamma(\Lambda\pi\pi)/\Gamma_{\text{total}} \qquad \Gamma_4/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td></td><td></td><td></td><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>&lt;0.11</td><td>ARMENTEROS68E</td><td>HBC</td><td>K<sup>-</sup> p (Γ<sub>1</sub>=0.09)</td></tr></tbody></table>

<table><tbody><tr><td>&lt;0.14</td><td>1 ARMENTEROS68E</td><td>HBC</td><td>K<sup>-</sup> p, K<sup>-</sup> d (Γ<sub>1</sub>=0.09)</td></tr></tbody></table>

$$ \Gamma(\Sigma\pi\pi)/\Gamma_{\text{total}} \qquad \Gamma_5/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>&lt;0.14</td><td>1 ARMENTEROS68E</td><td>HBC</td><td>K<sup>-</sup> p, K<sup>-</sup> d (Γ<sub>1</sub>=0.09)</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.309</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ Ratio only for Σ 2π system in I = 1, which cannot be Σ(1385).</td></tr></tbody></table>

$$ \Gamma(\Sigma\sigma)/\Gamma_{\text{total}} \qquad \Gamma_6/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.07 ± 0.03</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$$ \Gamma(\Sigma(1385)\pi, \text{S-wave})/\Gamma_{\text{total}} \qquad \Gamma_8/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td></td><td></td><td></td><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>0.309</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr></tbody></table>

<table><tbody><tr><td>0.044</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

$$ \Gamma(\Sigma(1385)\pi, \text{D-wave})/\Gamma_{\text{total}} \qquad \Gamma_9/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td></td><td></td><td></td><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>0.001</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr></tbody></table>

<table><tbody><tr><td>0.044</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

$$ \Gamma(N\bar{K}^*(892), S=1/2, \text{D-wave})/\Gamma_{\text{total}} \qquad \Gamma_{10}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td></td><td></td><td></td><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>0.001</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr></tbody></table>

<table><tbody><tr><td>0.001</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

$$ \Gamma(N\bar{K}^*(892), S=3/2, \text{S-wave})/\Gamma_{\text{total}} \qquad \Gamma_{11}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td></td><td></td><td></td><td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>0.002</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr></tbody></table>

<table><tbody><tr><td>0.002</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td></td><td></td><td></td><td>¹ From the preferred solution A in KAMANO 15.</td></tr></tbody></table>
$$ \Gamma(N\bar{K}^*(892), S=3/2, D-wave)/\Gamma_{\text{total}} $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.001 1 KAMANO 15 DPWA Multichannel

¹ From the preferred solution A in KAMANO 15.

$$ \Gamma(\Lambda(1405)\pi)/\Gamma_{\text{total}} $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.01 ± 0.01 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

<0.06 ARMENTEROS68E HBC $\bar{K}^-p, \bar{K}^-d$ ($\Gamma_1=0.09$)

$$ \Gamma(\Lambda(1405)\pi)/\Gamma(\Sigma(1385)\pi) $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.23 ± 0.08 BRUCKER 70 DBC $\bar{K}^-N \to \Sigma\pi$

$$ (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1670) \to \Lambda\pi $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tbody><tr><td>+0.08 ± 0.01</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>+0.081<sup>+0.002</sup><sub>-0.004</sub></td><td>GAO</td><td>12</td><td>DPWA $\overline{K}N \to \Lambda\pi$</td></tr><tr><td>+0.17 ± 0.03</td><td>1 MORRIS</td><td>78</td><td>DPWA $\bar{K}^-n \to \Lambda\pi^-$</td></tr><tr><td>+0.13 ± 0.02</td><td>1 MORRIS</td><td>78</td><td>DPWA $\bar{K}^-n \to \Lambda\pi^-$</td></tr><tr><td>+0.10 ± 0.02</td><td>GOPAL</td><td>77</td><td>DPWA $\overline{K}N$ multichannel</td></tr><tr><td>+0.06 ± 0.02</td><td>BAILLON</td><td>75</td><td>IPWA $\overline{K}N \to \Lambda\pi$</td></tr><tr><td>+0.09 ± 0.02</td><td>VANHORN</td><td>75</td><td>DPWA $\bar{K}^-p \to \Lambda\pi^0$</td></tr><tr><td>+0.018 ± 0.060</td><td>DEVENISH</td><td>74B</td><td>Fixed-t dispersion rel.</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>+0.08 or +0.08</td><td>2 MARTIN</td><td>77</td><td>DPWA $\overline{K}N$ multichannel</td></tr><tr><td>+0.05</td><td>DEBELLEFON</td><td>76</td><td>IPWA $\bar{K}^-p \to \Lambda\pi^0$</td></tr><tr><td>+0.08 ± 0.01</td><td>PONTE</td><td>75</td><td>DPWA $\bar{K}^-p \to \Lambda\pi^0$ (sol. 1)</td></tr><tr><td>+0.17 ± 0.01</td><td>PONTE</td><td>75</td><td>DPWA $\bar{K}^-p \to \Lambda\pi^0$ (sol. 2)</td></tr></tbody></table>

¹ Results are with and without an $S_{11}$ $\Sigma(1620)$ in the fit.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$ (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1670) \to \Sigma\pi \quad (\Gamma_1\Gamma_3)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tbody><tr><td>+0.20 ± 0.01</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>+0.20 ± 0.02</td><td>KOISO</td><td>85</td><td>DPWA $\bar{K}^-p \to \Sigma\pi$</td></tr><tr><td>+0.21 ± 0.02</td><td>GOPAL</td><td>77</td><td>DPWA $\overline{K}N$ multichannel</td></tr><tr><td>+0.20 ± 0.01</td><td>HEPP</td><td>76B</td><td>DPWA $\bar{K}^-N \to \Sigma\pi$</td></tr><tr><td>+0.21 ± 0.03</td><td>KANE</td><td>74</td><td>DPWA $\bar{K}^-p \to \Sigma\pi$</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

+0.18 or +0.17 1 MARTIN 77 DPWA $\overline{K}N$ multichannel

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$ (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1670) \to \Sigma(1385)\pi, \text{ S-wave} \quad (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

+0.11 ± 0.03 PREVOST 74 DPWA $\bar{K}^-N \to \Sigma(1385)\pi$

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.17 ± 0.02 1 SIMS 68 DBC $\bar{K}^-N \to \Lambda\pi\pi$

¹ SIMS 68 uses only cross-section data. Result used as upper limit only.

$$ \Gamma_1\Gamma_\tau/\Gamma_{\text{total}}^2 \text{ in } N\bar{K} \to \Sigma(1670) \to \Lambda(1405)\pi \quad \Gamma_1\Gamma_{13}/\Gamma^2 $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.007 ± 0.002 1 BRUCKER 70 $\bar{K}^-N \to \Sigma\pi\pi$

• • • We do not use the following data for averages, fits, limits, etc. • • •

<0.03 BERLEY 69 HBC $\bar{K}^-p$ 0.6-0.82 GeV/c
¹ Assuming the $\Lambda(1405)\pi$ cross-section bump is due only to $3/2^-$ resonance.

$$ (\Gamma_1\Gamma_\tau)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \to \Sigma(1670) \to \Lambda(1520)\pi $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.081 ± 0.016 1 CAMERON 77 DPWA P-wave decay

¹ The CAMERON 77 upper limit on F-wave decay is 0.03.

## $\Sigma(1670)$ REFERENCES

<table><tbody><tr><td>SARANTSEV</td><td>19</td><td>EPJ A55 180</td><td>A.V. Sarantsev et al.</td><td>(BONN, NPNI)</td></tr><tr><td>KAMANO</td><td>15</td><td>PR C92 025205</td><td>H. Kamano et al.</td><td>(ANL, OSAK)</td></tr><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td><td>H. Zhang et al.</td><td>(KSU)</td></tr><tr><td>GAO</td><td>12</td><td>PR C86 025201</td><td>P. Gao, J. Shi, B.S. Zou</td><td>(BHEP, BEIJT+)</td></tr><tr><td>Also</td><td></td><td>NP A867 41</td><td>P. Gao, B.S. Zou, A. Sibtirsev</td><td>(BHEP, BEIJT+)</td></tr><tr><td>KOISO</td><td>85</td><td>NP A433 619</td><td>H. Kolso et al.</td><td>(TOKY, MASA)</td></tr><tr><td>PDG</td><td>82</td><td>PL 111B 1</td><td>M. Roos et al.</td><td>(HELS, CIT, CERN)</td></tr><tr><td>GOPAL</td><td>80</td><td>Toronto Conf. 159</td><td>G.P. Gopal</td><td>(RHEL) UP</td></tr><tr><td>ALSTON...</td><td>78</td><td>PR D18 182</td><td>M. Alston-Garnjost et al.</td><td>(LBL, MTHO+) UP</td></tr><tr><td>Also</td><td></td><td>PRL 38 1007</td><td>M. Alston-Garnjost et al.</td><td>(LBL, MTHO+) UP</td></tr><tr><td>MORRIS</td><td>78</td><td>PR D17 55</td><td>W.A. Morris et al.</td><td>(FSU) UP</td></tr><tr><td>CAMERON</td><td>77</td><td>NP B131 399</td><td>W. Cameron et al.</td><td>(RHEL, LOIC) UP</td></tr><tr><td>GOPAL</td><td>77</td><td>NP B119 362</td><td>G.P. Gopal et al.</td><td>(LOIC, RHEL) UP</td></tr><tr><td>MARTIN</td><td>77</td><td>NP B127 349</td><td>B.R. Martin, M.K. Pidcock, R.G. Moorhouse (LOUC+) UP</td><td></td></tr><tr><td>Also</td><td></td><td>NP B126 266</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC)</td></tr><tr><td>Also</td><td></td><td>NP B126 285</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC) UP</td></tr><tr><td>DEBELLEFON</td><td>76</td><td>NP B109 129</td><td>A. de Bellefon, A. Berthon</td><td>(CDEF) UP</td></tr><tr><td>HEPP</td><td>76B</td><td>PL 65B 487</td><td>V. Hepp et al.</td><td>(CERN, HEIDH, MPM) UP</td></tr><tr><td>BAILLON</td><td>75</td><td>NP B94 39</td><td>P.H. Baillon, P.J. Litchfield</td><td>(CERN, RHEL) UP</td></tr><tr><td>PONTE</td><td>75</td><td>PR D12 2597</td><td>R.A. Ponte et al.</td><td>(MASA, TENN, UCR) UP</td></tr></tbody></table>

<table><tbody><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td><td>A.J. van Horn</td><td>(LBL) UP</td></tr><tr><td>Also</td><td></td><td>NP B87 157</td><td>A.J. van Horn</td><td>(LBL) UP</td></tr><tr><td>DEVENISH</td><td>74B</td><td>NP B81 330</td><td>R.C.E. Devenish, C.D. Froggatt, B.R. Martin (DESY+)</td><td></td></tr><tr><td>KANE</td><td>74</td><td>LBL-2452</td><td>D.F. Kane</td><td>(LBL) UP</td></tr><tr><td>PREVOST</td><td>74</td><td>NP B69 246</td><td>J. Prevost et al.</td><td>(SACL, CERN, HEID)</td></tr><tr><td>BRUCKER</td><td>70</td><td>Duke Conf. 155</td><td>E.B. Brucker et al.</td><td>(FSU) I</td></tr><tr><td>Hyperon Resonances, 1970</td><td></td><td></td><td></td><td></td></tr><tr><td>BERLEY</td><td>69</td><td>PL 30B 430</td><td>D. Berley et al.</td><td>(BNL)</td></tr><tr><td>ARMENTEROS</td><td>68E</td><td>PL 28B 521</td><td>R. Armenteros et al.</td><td>(CERN, HEID, SACL) I</td></tr><tr><td>SIMS</td><td>68</td><td>PRL 21 1413</td><td>W.H. Sims et al.</td><td>(FSU, TUFTS, BRAN)</td></tr></tbody></table>

$$ \Sigma(1750) \ 1/2^- $$

$$ I(J^P) = 1(\frac{1}{2}^-) \quad \text{Status: } \ast\ast $$

For most results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters **111B** 1 (1982).

There is evidence for this state in many partial-wave analyses, but with wide variations in the mass, width, and couplings. The latest analyses indicated significant couplings to $N\bar{K}$ and $\Lambda\pi$, as well as to $\Sigma\eta$ whose threshold is at 1746 MeV (JONES 74).

## $\Sigma(1750)$ POLE POSITION

### REAL PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

1689 ± 11 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

1704 ± 3 1 KAMANO 15 DPWA $\overline{K}N$ multichannel

1708 ZHANG 13A DPWA $\overline{K}N$ multichannel

¹ From the preferred solution A in KAMANO 15. Solution B reports two poles at M = 1551 ± $\frac{1}{3}$ MeV and 1940 ± $\frac{1}{2}$ MeV.

### $-2\times$IMAGINARY PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

206 ± 18 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

86 ± $\frac{14}{4}$ 1 KAMANO 15 DPWA $\overline{K}N$ multichannel

158 ZHANG 13A DPWA $\overline{K}N$ multichannel

¹ From the preferred solution A in KAMANO 15. Solution B Reports two poles with $\Gamma = 376 \pm \frac{12}{2}$ and $172 \pm \frac{4}{4}$ MeV.

## $\Sigma(1750)$ POLE RESIDUES

The normalized residue is the residue divided by $\Gamma_{pole}/2$.

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1750) \to N\bar{K} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.46 ± 0.09 -144 ± 15 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.0982 1 KAMANO 15 DPWA $\overline{K}N$ multichannel

¹ From the preferred solution A in KAMANO 15.

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1750) \to \Sigma\pi $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.27 ± 0.05 100 ± 18 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.192 137 1 KAMANO 15 DPWA Multichannel

¹ From the preferred solution A in KAMANO 15.

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1750) \to \Sigma\eta $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.05 ± 0.03 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1750) \to \Lambda\pi $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.26 ± 0.06 115 ± 15 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.207 169 1 KAMANO 15 DPWA $\overline{K}N$ multichannel

¹ From the preferred solution A in KAMANO 15.

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1750) \to \Xi K $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.02 ± 0.02 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

$$ \text{Normalized residue in } N\bar{K} \to \Sigma(1750) \to \Sigma(1385)\pi, \text{ D-wave} $$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

0.04 ± 0.03 SARANTSEV 19 DPWA $\overline{K}N$ multichannel

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.0536 73 1 KAMANO 15 DPWA $\overline{K}N$ multichannel

¹ From the preferred solution A in KAMANO 15.
Normalized residue in $N\bar{K} \to \Sigma(1750) \to \Lambda(1520)\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.15±0.07</td><td>-25 ± 40</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

Normalized residue in $N\bar{K} \to \Sigma(1750) \to N\bar{K}^*(892), S=1/2, S-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.05±0.03</td><td>-100 ± 35</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

$\Sigma(1750)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>1700 to 1800 (≈ 1750) OUR ESTIMATE</strong></td></tr><tr><td>1692±11</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr><tr><td>1739± 8</td><td>ZHANG</td><td>13A</td><td>DPWA K̄N multichannel</td></tr><tr><td>1756±10</td><td>GOPAL</td><td>80</td><td>DPWA K̄N → K̄N</td></tr><tr><td>1770±10</td><td>ALSTON-...</td><td>78</td><td>DPWA K̄N → K̄N</td></tr><tr><td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>1770±15</td><td>GOPAL</td><td>77</td><td>DPWA K̄N multichannel</td></tr><tr><td>1800 or 1813</td><td>1 MARTIN</td><td>77</td><td>DPWA K̄N multichannel</td></tr><tr><td>1715±10</td><td>2 CARROLL</td><td>76</td><td>DPWA Isospin-1 total σ</td></tr><tr><td>1730</td><td>DEBELLEFON</td><td>76</td><td>IPWA K̄p → Λπ°</td></tr><tr><td>1780±30</td><td>BAILLON</td><td>75</td><td>IPWA K̄N → Λπ (sol. 1)</td></tr><tr><td>1700±30</td><td>BAILLON</td><td>75</td><td>IPWA K̄N → Λπ (sol. 2)</td></tr><tr><td>1697+20/-10</td><td>VANHORN</td><td>75</td><td>DPWA K̄p → Λπ°</td></tr><tr><td>1785±12</td><td>CHU</td><td>74</td><td>DBC Fits σ(K̄n → Σ°η)</td></tr><tr><td>1760± 5</td><td>3 JONES</td><td>74</td><td>HBC Fits σ(K̄p → Σ°η)</td></tr><tr><td>1739±10</td><td>PREVOST</td><td>74</td><td>DPWA K̄N → Σ(1385)π</td></tr></tbody></table>

¹The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

²A total cross-section bump with $(J+1/2) \Gamma_{el} / \Gamma_{total} = 0.30$.

³An S-wave Breit-Wigner fit to the threshold cross section with no background and errors statistical only.

$\Sigma(1750)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>100 to 200 (≈ 150) OUR ESTIMATE</strong></td></tr><tr><td>208±18</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr><tr><td>182±60</td><td>ZHANG</td><td>13A</td><td>DPWA K̄N multichannel</td></tr><tr><td>64±10</td><td>GOPAL</td><td>80</td><td>DPWA K̄N → K̄N</td></tr><tr><td>161±20</td><td>ALSTON-...</td><td>78</td><td>DPWA K̄N → K̄N</td></tr><tr><td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>60±10</td><td>GOPAL</td><td>77</td><td>DPWA K̄N multichannel</td></tr><tr><td>117 or 119</td><td>1 MARTIN</td><td>77</td><td>DPWA K̄N multichannel</td></tr><tr><td>10</td><td>2 CARROLL</td><td>76</td><td>DPWA Isospin-1 total σ</td></tr><tr><td>110</td><td>DEBELLEFON</td><td>76</td><td>IPWA K̄p → Λπ°</td></tr><tr><td>140±30</td><td>BAILLON</td><td>75</td><td>IPWA K̄N → Λπ (sol. 1)</td></tr><tr><td>160±50</td><td>BAILLON</td><td>75</td><td>IPWA K̄N → Λπ (sol. 2)</td></tr><tr><td>66+14/-12</td><td>VANHORN</td><td>75</td><td>DPWA K̄p → Λπ°</td></tr><tr><td>89±33</td><td>CHU</td><td>74</td><td>DBC Fits σ(K̄n → Σ°η)</td></tr><tr><td>92± 7</td><td>3 JONES</td><td>74</td><td>HBC Fits σ(K̄p → Σ°η)</td></tr><tr><td>108±20</td><td>PREVOST</td><td>74</td><td>DPWA K̄N → Σ(1385)π</td></tr></tbody></table>

¹The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

²A total cross-section bump with $(J+1/2) \Gamma_{el} / \Gamma_{total} = 0.30$.

³An S-wave Breit-Wigner fit to the threshold cross section with no background and errors statistical only.

$\Sigma(1750)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>f</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N<span style="text-decoration: overline">K</span></td><td>0.06 to 0.12</td></tr><tr><td>Γ<sub>2</sub> Λπ</td><td>(14 ± 5) %</td></tr><tr><td>Γ<sub>3</sub> Σπ</td><td>(16 ± 4) %</td></tr><tr><td>Γ<sub>4</sub> Ση</td><td>15–55 %</td></tr><tr><td>Γ<sub>5</sub> Σ(1385)π, D-wave</td><td>&lt; 1 %</td></tr><tr><td>Γ<sub>6</sub> Λ(1520)π</td><td>(2.0 ± 1.0) %</td></tr><tr><td>Γ<sub>7</sub> N<span style="text-decoration: overline">K</span>*(892), S=1/2</td><td>(8 ± 4) %</td></tr><tr><td>Γ<sub>8</sub> N<span style="text-decoration: overline">K</span>*(892), S=3/2, D-wave</td><td></td></tr></tbody></table>

$\Sigma(1750)$ BRANCHING RATIOS

See “Sign conventions for resonance couplings” in the Note on $\Lambda$ and $\Sigma$ Resonances.

<table><thead><tr><th>Γ(N<span style="text-decoration: overline">K</span>) / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>0.06 to 0.12 OUR ESTIMATE</strong></td></tr><tr><td>0.46 ± 0.09</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr><tr><td>0.09 ± 0.07</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>0.14 ± 0.03</td><td>GOPAL</td><td>80</td><td>DPWA K̄N → K̄N</td></tr><tr><td>0.33 ± 0.05</td><td>ALSTON-...</td><td>78</td><td>DPWA K̄N → K̄N</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.154</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td>0.15 ± 0.03</td><td>GOPAL</td><td>77</td><td>DPWA See GOPAL 80</td></tr><tr><td>0.06 or 0.05</td><td>2 MARTIN</td><td>74</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

¹From the preferred solution A in KAMANO 15.

²The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

<table><thead><tr><th>Γ(Λπ)/Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.14 ± 0.05</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr><tr><td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>0.435</td><td>1 KAMANO</td><td>15</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

¹From the preferred solution A in KAMANO 15.

<table><thead><tr><th>Γ(Σπ)/Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.16 ± 0.04</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr><tr><td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td></tr><tr><td>0.373</td><td>1 KAMANO</td><td>15</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

¹From the preferred solution A in KAMANO 15.

<table><thead><tr><th>Γ(Λ(1520)π)/Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.02 ± 0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

<table><thead><tr><th>Γ(Σ(1385)π, D-wave)/Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>&lt;0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.024</td><td>1 KAMANO</td><td>15</td><td>DPWA K̄N multichannel</td></tr><tr><td colspan="4">¹From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

<table><thead><tr><th>Γ(N<span style="text-decoration: overline">K</span>*(892), S=1/2)/Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>~0</td><td>SARANTSEV</td><td>19</td><td>DPWA K̄N multichannel</td></tr><tr><td>0.08 ± 0.04</td><td>ZHANG</td><td>13A</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>0.004</td><td>1 KAMANO</td><td>15</td><td>DPWA K̄N multichannel</td></tr><tr><td colspan="4">¹From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

<table><thead><tr><th>Γ(N<span style="text-decoration: overline">K</span>*(892), S=3/2, D-wave)/Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.01</td><td>1 KAMANO</td><td>15</td><td>DPWA Multichannel</td></tr><tr><td colspan="4">¹From the preferred solution A in KAMANO 15.</td></tr></tbody></table>

<table><thead><tr><th>(Γ<sub>f</sub>Γ<sub>f</sub>)<sup>1/2</sup>/Γ<sub>total</sub> in N<span style="text-decoration: overline">K</span> → Σ(1750) → Λπ</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.10 ± 0.04</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>0.04 ± 0.03</td><td>GOPAL</td><td>77</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>-0.10 or -0.09</td><td>1 MARTIN</td><td>77</td><td>DPWA K̄N multichannel</td></tr><tr><td>-0.12</td><td>DEBELLEFON</td><td>76</td><td>IPWA K̄p → Λπ°</td></tr><tr><td>-0.12 ± 0.02</td><td>BAILLON</td><td>75</td><td>IPWA K̄N → Λπ (sol. 1)</td></tr><tr><td>-0.13 ± 0.03</td><td>BAILLON</td><td>75</td><td>IPWA K̄N → Λπ (sol. 2)</td></tr><tr><td>-0.13 ± 0.04</td><td>VANHORN</td><td>75</td><td>DPWA K̄p → Λπ°</td></tr><tr><td>-0.120 ± 0.077</td><td>DEVENISH</td><td>74B</td><td>Fixed-t dispersion rel.</td></tr></tbody></table>

¹The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

<table><thead><tr><th>(Γ<sub>f</sub>Γ<sub>f</sub>)<sup>1/2</sup>/Γ<sub>total</sub> in N<span style="text-decoration: overline">K</span> → Σ(1750) → Σπ</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.17 ± 0.07</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>-0.09 ± 0.05</td><td>GOPAL</td><td>77</td><td>DPWA K̄N multichannel</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>+0.06 or +0.06</td><td>1 MARTIN</td><td>77</td><td>DPWA K̄N multichannel</td></tr><tr><td>0.13 ± 0.02</td><td>LANGBEIN</td><td>72</td><td>IPWA K̄N multichannel</td></tr><tr><td colspan="4">¹The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.</td></tr></tbody></table>

<table><thead><tr><th>(Γ<sub>f</sub>Γ<sub>f</sub>)<sup>1/2</sup>/Γ<sub>total</sub> in N<span style="text-decoration: overline">K</span> → Σ(1750) → Ση</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.23 ± 0.01</td><td>1 JONES</td><td>74</td><td>HBC Fits σ(K̄p → Σ°η)</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tbody><tr><td>seen</td><td>CLINE</td><td>69</td><td>DBC Threshold bump</td></tr><tr><td colspan="4">¹An S-wave Breit-Wigner fit to the threshold cross section with no background and errors statistical only.</td></tr></tbody></table>

<table><thead><tr><th>(Γ<sub>f</sub>Γ<sub>f</sub>)<sup>1/2</sup>/Γ<sub>total</sub> in N<span style="text-decoration: overline">K</span> → Σ(1750) → Σ(1385)π, D-wave</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.17 ± 0.07</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>+0.18 ± 0.15</td><td>PREVOST</td><td>74</td><td>DPWA K̄N → Σ(1385)π</td></tr></tbody></table>
$$ (\Gamma_1\Gamma_2)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \rightarrow \Sigma(1750) \rightarrow \Lambda(1520)\pi \quad (\Gamma_1\Gamma_6)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

0.032 ± 0.021 CAMERON 77 DPWA P-wave decay

## $\Sigma(1750)$ REFERENCES

<table><tr><td>SARANTSEV</td><td>19</td><td>EPJ A55 180</td><td>A.V. Sarantsev et al.</td><td>(BONN, PNPI)</td></tr><tr><td>KAMANO</td><td>15</td><td>PR C92 025205</td><td>H. Kamano et al.</td><td>(ANL, OSAK)</td></tr><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td><td>H. Zhang et al.</td><td>(KSU)</td></tr><tr><td>PDG</td><td>82</td><td>PL 111B 1</td><td>M. Roos et al.</td><td>(HELS, CIT, CERN)</td></tr><tr><td>GOPAL</td><td>80</td><td>Toronto Conf. 159</td><td>G.P. Gopal</td><td>(RHEL) IJP</td></tr><tr><td>ALSTON...</td><td>78</td><td>PR D18 100</td><td>M. Alston-Garnjost et al.</td><td>(LBL, MTHO+) IJP</td></tr><tr><td>PRL</td><td>78</td><td>PRL 38 1007</td><td>M. Alston-Garnjost et al.</td><td>(LBL, MTHO+) IJP</td></tr><tr><td>CAMERON</td><td>77</td><td>NP B131 399</td><td>Also</td><td>(RHEL, LOIC) IJP</td></tr><tr><td>GOPAL</td><td>77</td><td>NP B119 362</td><td>W. Cameron et al.</td><td>(LOIC, RHEL) IJP</td></tr><tr><td>MARTIN</td><td>77</td><td>NP B127 349</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC+) IJP</td></tr><tr><td>Also</td><td></td><td>NP B126 266</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC)</td></tr><tr><td>Also</td><td></td><td>NP B126 285</td><td>B.R. Martin, M.K. Pidcock</td><td>(LOUC+) IJP</td></tr><tr><td>CARROLL</td><td>76</td><td>PRL 37 806</td><td>A.S. Carroll et al.</td><td>(BNL)</td></tr><tr><td>DEBELLEFON</td><td>76</td><td>NP B109 129</td><td>A. de Bellefond, A. Berthon</td><td>(CDEF) IJP</td></tr><tr><td>BAILLON</td><td>75</td><td>NP B94 39</td><td>P.H. Baillon, P.J. Litchfield</td><td>(CERN, RHEL) IJP</td></tr><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td><td>A.J. van Horn</td><td>(LBL) IJP</td></tr><tr><td>Also</td><td></td><td>NP B87 157</td><td>A.J. van Horn</td><td>(LBL) IJP</td></tr><tr><td>CHU</td><td>74</td><td>NC 20A 35</td><td>R.Y.L. Chu et al.</td><td>(PLAT, TUFTS, BRAN) IJP</td></tr><tr><td>DEVENISH</td><td>74B</td><td>NP B81 330</td><td>R.C.E. Devenish, C.D. Froggatt, B.R. Martin</td><td>(DESY+)</td></tr><tr><td>JONES</td><td>74</td><td>NP B73 141</td><td>M.D. Jones</td><td>(CHIC) IJP</td></tr><tr><td>PREVOST</td><td>74</td><td>NP B69 246</td><td>J. Prevost et al.</td><td>(SACL, CERN, HEID)</td></tr><tr><td>LANGBEIN</td><td>72</td><td>NP B47 477</td><td>W. Langbein, F. Wagner</td><td>(MPIM) IJP</td></tr><tr><td>CLINE</td><td>69</td><td>LNC 2 407</td><td>D. Cline, R. Laumann, J. Mapp</td><td>(WISC)</td></tr></table>

$$ \Sigma(1775) 5/2^{-} $$

$$ I(J^P) = 1(\frac{5}{2}^{-}) \quad \text{Status: ****} $$

Discovered by GALTIERI 63, this resonance plays the same role as cornerstone for isospin-1 analyses in this region as the $\Lambda(1820)F_{05}$ does in the isospin-0 channel.

For most results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters **111B** 1 (1982).

## $\Sigma(1775)$ POLE POSITION

### REAL PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

#### 1760 to 1780 (≈ 1770) OUR ESTIMATE

<table><tr><td>1767 ± 4</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>1767<sup>+2</sup><sub>-2</sub></td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1759</td><td>ZHANG</td><td>13A</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

#### -2xIMAGINARY PART

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

#### 45 to 65 (≈ 55) OUR ESTIMATE

<table><tr><td>122 ± 8</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>128<sup>+4</sup><sub>-2</sub></td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>118</td><td>ZHANG</td><td>13A</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

## $\Sigma(1775)$ POLE RESIDUES

The normalized residue is the residue divided by $\Gamma_{pole}/2$.

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow N\bar{K}$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.44 ± 0.09</td><td>-17 ± 10</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.371</td><td>-32</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Sigma\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.13 ± 0.03</td><td>10 ± 12</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.115</td><td>-24</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Lambda\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.47 ± 0.10</td><td>130 ± 15</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.325</td><td>157</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Sigma(1385)\pi$, D-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.391</td><td>137</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Sigma(1385)\pi$, G-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>0.0129</td><td>-58</td><td>1 KAMANO</td><td>15</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

¹ From the preferred solution A in KAMANO 15.

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow N\bar{K}^*(892)$, S=1/2, D-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.04 ± 0.02</td><td>-100 ± 60</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow N\bar{K}^*(892)$, S=3/2, D-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.09 ± 0.06</td><td>10 ± 50</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow N\bar{K}^*(892)$, S=3/2, G-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.04 ± 0.02</td><td>-100 ± 60</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Xi K$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.02 ± 0.01</td><td>-90 ± 35</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Lambda(1520)\pi$, P-wave

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.09 ± 0.03</td><td>10 ± 30</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Lambda(1520)\pi$, F-wave

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.01 ± 0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

### Normalized residue in $N\bar{K} \rightarrow \Sigma(1775) \rightarrow \Delta\bar{K}$, D-wave

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

<table><tr><td>0.02 ± 0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr></table>

## $\Sigma(1775)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

#### 1770 to 1780 (≈ 1775) OUR ESTIMATE

<table><tr><td>1776 ± 4</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>1778 ± 1</td><td>ZHANG</td><td>13A</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>1778 ± 5</td><td>GOPAL</td><td>80</td><td>DPWA $\bar{K}$ N → $\bar{K}$ N</td></tr><tr><td>1777 ± 5</td><td>ALSTON...</td><td>78</td><td>DPWA $\bar{K}$ N → $\bar{K}$ N</td></tr><tr><td>1775 ± 10</td><td>BAILLON</td><td>75</td><td>IPWA $\bar{K}$ N → $\Lambda\pi$</td></tr><tr><td>1774 ± 10</td><td>VANHORN</td><td>75</td><td>DPWA $\bar{K}^-$ p → $\Lambda\pi^0$</td></tr><tr><td>1772 ± 6</td><td>KANE</td><td>74</td><td>DPWA $\bar{K}^-$ p → $\Sigma\pi$</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1774 ± 5</td><td>GOPAL</td><td>77</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>1772 or 1777</td><td>1 MARTIN</td><td>77</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>1765</td><td>DEBELLEFON</td><td>76</td><td>IPWA $\bar{K}^-$ p → $\Lambda\pi^0$</td></tr></table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

## $\Sigma(1775)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

#### 105 to 135 (≈ 120) OUR ESTIMATE

<table><tr><td>124 ± 8</td><td>SARANTSEV</td><td>19</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>131 ± 3</td><td>ZHANG</td><td>13A</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>137 ± 10</td><td>GOPAL</td><td>80</td><td>DPWA $\bar{K}$ N → $\bar{K}$ N</td></tr><tr><td>116 ± 10</td><td>ALSTON...</td><td>78</td><td>DPWA $\bar{K}$ N → $\bar{K}$ N</td></tr><tr><td>125 ± 15</td><td>BAILLON</td><td>75</td><td>IPWA $\bar{K}$ N → $\Lambda\pi$</td></tr><tr><td>146 ± 18</td><td>VANHORN</td><td>75</td><td>DPWA $\bar{K}^-$ p → $\Lambda\pi^0$</td></tr><tr><td>154 ± 10</td><td>KANE</td><td>74</td><td>DPWA $\bar{K}^-$ p → $\Sigma\pi$</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>130 ± 10</td><td>GOPAL</td><td>77</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>102 or 103</td><td>1 MARTIN</td><td>77</td><td>DPWA $\bar{K}$ N multichannel</td></tr><tr><td>120</td><td>DEBELLEFON</td><td>76</td><td>IPWA $\bar{K}^-$ p → $\Lambda\pi^0$</td></tr></table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

## $\Sigma(1775)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction ($\Gamma_f/\Gamma$)</th></tr></thead></table>

<table><tr><td>$\Gamma_1$</td><td>$N\bar{K}$</td><td>37-43%</td></tr></table>

<table><tr><td>$\Gamma_2$</td><td>$\Lambda\pi$</td><td>14-20%</td></tr></table>

<table><tr><td>$\Gamma_3$</td><td>$\Sigma\pi$</td><td>2-5%</td></tr></table>

<table><tr><td>$\Gamma_4$</td><td>$\Sigma(1385)\pi$</td><td>8-12%</td></tr></table>

<table><tr><td>$\Gamma_5$</td><td>$\Sigma(1385)\pi$, D-wave</td></tr></table>

<table><tr><td>$\Gamma_6$</td><td>$\Sigma(1385)\pi$, G-wave</td></tr></table>
Γ<sub>7</sub> Λ(1520)π, P-wave 17-23%

Γ<sub>8</sub> Σππ

Γ<sub>9</sub> Δ(1232)K, D-wave

Γ<sub>10</sub> N K* (892), S=1/2

Γ<sub>11</sub> N K* (892), S=1/2, D-wave

Γ<sub>12</sub> N K* (892), S=3/2, D-wave

Γ<sub>13</sub> N K* (892), S=3/2, G-wave

Σ(1775) BRANCHING RATIOS

See "Sign conventions for resonance couplings" in the Note on Λ and Σ Resonances. Also, the errors quoted do not include uncertainties due to the parametrization used in the partial-wave analyses and are thus too small.

$$
\frac{\Gamma(N\bar{K})}{\Gamma_{\text{total}}} \quad \Gamma_1/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td colspan="4"><strong>0.37 to 0.43 OUR ESTIMATE</strong></td>
    </tr>
    <tr>
      <td>0.43 ±0.09</td>
      <td>SARANTSEV</td>
      <td>19</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td>0.40 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td>0.40 ±0.02</td>
      <td>GOPAL</td>
      <td>80</td>
      <td>DPWA K&#773; N → K&#773; N</td>
    </tr>
    <tr>
      <td>0.37 ±0.03</td>
      <td>ALSTON-...</td>
      <td>78</td>
      <td>DPWA K&#773; N → K&#773; N</td>
    </tr>
    <tr>
      <td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td>
    </tr>
    <tr>
      <td>0.402</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA Multichannel</td>
    </tr>
    <tr>
      <td>0.41 ±0.03</td>
      <td>GOPAL</td>
      <td>77</td>
      <td>DPWA See GOPAL 80</td>
    </tr>
    <tr>
      <td>0.37 or 0.36</td>
      <td>2 MARTIN</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

² The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$
\frac{\Gamma(\Lambda\pi)}{\Gamma_{\text{total}}} \quad \Gamma_2/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.49 ±0.10</td>
      <td>SARANTSEV</td>
      <td>19</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td>
    </tr>
    <tr>
      <td>0.244</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{\Gamma(\Lambda\pi)}{\Gamma(N\bar{K})} \quad \Gamma_2/\Gamma_1
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.33 ±0.05</td>
      <td>UHLIG</td>
      <td>67</td>
      <td>HBC K<sup>-</sup> p 0.9 GeV/c</td>
    </tr>
  </tbody>
</table>

$$
\frac{\Gamma(\Sigma\pi)}{\Gamma_{\text{total}}} \quad \Gamma_3/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.035 ±0.010</td>
      <td>SARANTSEV</td>
      <td>19</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td>
    </tr>
    <tr>
      <td>0.042</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{\Gamma(\Sigma(1385)\pi)}{\Gamma(N\bar{K})} \quad \Gamma_4/\Gamma_1
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.25 ±0.09</td>
      <td>UHLIG</td>
      <td>67</td>
      <td>HBC K<sup>-</sup> p 0.9 GeV/c</td>
    </tr>
  </tbody>
</table>

$$
\frac{\Gamma(\Sigma(1385)\pi, \text{D-wave})}{\Gamma_{\text{total}}} \quad \Gamma_5/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td>0.309</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{\Gamma(\Sigma(1385)\pi, \text{G-wave})}{\Gamma_{\text{total}}} \quad \Gamma_6/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>• • • We do not use the following data for averages, fits, limits, etc. • • •</td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td>not seen</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{\Gamma(\Lambda(1520)\pi, \text{P-wave})}{\Gamma_{\text{total}}} \quad \Gamma_7/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.02 ±0.01</td>
      <td>SARANTSEV</td>
      <td>19</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
  </tbody>
</table>

$$
\frac{\Gamma(\Lambda(1520)\pi, \text{P-wave})}{\Gamma(N\bar{K})} \quad \Gamma_7/\Gamma_1
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.28 ±0.05</td>
      <td>UHLIG</td>
      <td>67</td>
      <td>HBC K<sup>-</sup> p 0.9 GeV/c</td>
    </tr>
  </tbody>
</table>

$$
\frac{\Gamma(\Sigma\pi)}{\Gamma_{\text{total}}} \quad \Gamma_8/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
</table>

<table>
  <thead>
    <tr>
      <th>• • •</th>
      <th>We do not use the following data for averages, fits, limits, etc. • • •</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.12</td>
      <td>1 ARMENTEROS68C</td>
      <td>HDBC K<sup>-</sup> N → Σππ</td>
    </tr>
  </tbody>
</table>

¹ For about 3/4 of this, the Σπ system has *I* = 0 and is almost entirely Λ(1520). For the rest, the Σπ has *I* = 1, which is about what is expected from the known Σ(1775) → Σ(1385)π rate, as seen in Λππ.

$$
\frac{\Gamma(N\bar{K}^*(892), S=1/2, \text{D-wave})}{\Gamma_{\text{total}}} \quad \Gamma_{11}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
</table>

<table>
  <thead>
    <tr>
      <th>• • •</th>
      <th>We do not use the following data for averages, fits, limits, etc. • • •</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>not seen</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{\Gamma(N\bar{K}^*(892), S=3/2, \text{D-wave})}{\Gamma_{\text{total}}} \quad \Gamma_{12}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>• • •</td>
      <td>We do not use the following data for averages, fits, limits, etc. • • •</td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td>0.003</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{\Gamma(N\bar{K}^*(892), S=3/2, \text{G-wave})}{\Gamma_{\text{total}}} \quad \Gamma_{13}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>• • •</td>
      <td>We do not use the following data for averages, fits, limits, etc. • • •</td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td>not seen</td>
      <td>1 KAMANO</td>
      <td>15</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

¹ From the preferred solution A in KAMANO 15.

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow \Lambda\pi} \quad (\Gamma_1 \Gamma_2)^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>-0.31 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
    <tr>
      <td>-0.28 ±0.03</td>
      <td>GOPAL</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td>-0.25 ±0.02</td>
      <td>BAILLON</td>
      <td>75</td>
      <td>IPWA K&#773; N → Λπ</td>
    </tr>
    <tr>
      <td>-0.28 +0.04</td>
      <td>VANHORN</td>
      <td>75</td>
      <td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td>
    </tr>
    <tr>
      <td>-0.05</td>
      <td>DEVENISH</td>
      <td>74B</td>
      <td>Fixed-t dispersion rel.</td>
    </tr>
    <tr>
      <td>-0.259 ±0.048</td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td colspan="4">• • • We do not use the following data for averages, fits, limits, etc. • • •</td>
    </tr>
    <tr>
      <td>-0.29 or -0.28</td>
      <td>1 MARTIN</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td>-0.30</td>
      <td>DEBELLEFON</td>
      <td>76</td>
      <td>IPWA K<sup>-</sup> p → Λπ<sup>0</sup></td>
    </tr>
  </tbody>
</table>

<table>
  <thead>
    <tr>
      <th>• • •</th>
      <th>We do not use the following data for averages, fits, limits, etc. • • •</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>-0.09 ±0.01</td>
      <td>1 MARTIN</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td>-0.08 or +0.08</td>
      <td>1 MARTIN</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
  </tbody>
</table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow \Sigma\pi} \quad (\Gamma_1 \Gamma_3)^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>+0.08 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
    <tr>
      <td>+0.13 ±0.02</td>
      <td>GOPAL</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
    <tr>
      <td>0.09 ±0.01</td>
      <td>KANE</td>
      <td>74</td>
      <td>DPWA K<sup>-</sup> p → Σπ</td>
    </tr>
  </tbody>
</table>

<table>
  <thead>
    <tr>
      <th>• • •</th>
      <th>We do not use the following data for averages, fits, limits, etc. • • •</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>+0.08 or +0.08</td>
      <td>1 MARTIN</td>
      <td>77</td>
      <td>DPWA K&#773; N multichannel</td>
    </tr>
  </tbody>
</table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow \Sigma(1385)\pi, \text{D-wave}} \quad (\Gamma_1 \Gamma_5)^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>-0.12 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
    <tr>
      <td>-0.184 ±0.011</td>
      <td>1 CAMERON</td>
      <td>78</td>
      <td>DPWA K<sup>-</sup> p → Σ(1385)π</td>
    </tr>
    <tr>
      <td>+0.20 ±0.02</td>
      <td>PREVOST</td>
      <td>74</td>
      <td>DPWA K<sup>-</sup> N → Σ(1385)π</td>
    </tr>
  </tbody>
</table>

<table>
  <thead>
    <tr>
      <th>• • •</th>
      <th>We do not use the following data for averages, fits, limits, etc. • • •</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>0.32 ±0.06</td>
      <td>SIMS</td>
      <td>68</td>
      <td>DBC K<sup>-</sup> N → Λππ</td>
    </tr>
    <tr>
      <td>0.24 ±0.03</td>
      <td>ARMENTEROS67C</td>
      <td>HBC</td>
      <td>K<sup>-</sup> p → Λππ</td>
    </tr>
  </tbody>
</table>

¹ The CAMERON 78 upper limit on G-wave decay is 0.03.

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow \Lambda(1520)\pi, \text{P-wave}} \quad (\Gamma_1 \Gamma_7)^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>-0.06 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
    <tr>
      <td>-0.305 ±0.010</td>
      <td>1 CAMERON</td>
      <td>77</td>
      <td>DPWA K<sup>-</sup> p → Λ(1520) π<sup>0</sup></td>
    </tr>
    <tr>
      <td>0.31 ±0.02</td>
      <td>BARLETTA</td>
      <td>72</td>
      <td>DPWA K<sup>-</sup> p → Λ(1520) π<sup>0</sup></td>
    </tr>
    <tr>
      <td>0.27 ±0.03</td>
      <td>ARMENTEROS65C</td>
      <td>HBC</td>
      <td>K<sup>-</sup> p → Λ(1520) π<sup>0</sup></td>
    </tr>
  </tbody>
</table>

¹ This rate combines P-wave- and F-wave decays. The CAMERON 77 results for the separate P-wave- and F-wave decays are -0.303 ± 0.010 and -0.037 ± 0.014. The published signs have been changed here to be in accord with the baryon-first convention.

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow \Delta(1232)\bar{K}, \text{D-wave}} \quad (\Gamma_1 \Gamma_9)^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>+0.06 ±0.03</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow N\bar{K}^*(892), S=1/2} \quad (\Gamma_1 \Gamma_{10})^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>+0.04 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

$$
\frac{(\Gamma_1 \Gamma_1)^{1/2}}{\Gamma_{\text{total}} \rightarrow \Sigma(1775) \rightarrow N\bar{K}^*(892), S=3/2, \text{D-wave}} \quad (\Gamma_1 \Gamma_{12})^{1/2}/\Gamma
$$

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>+0.04 ±0.01</td>
      <td>ZHANG</td>
      <td>13A</td>
      <td>DPWA Multichannel</td>
    </tr>
  </tbody>
</table>

Σ(1775) REFERENCES

<table>
  <thead>
    <tr>
      <th>VALUE</th>
      <th>DOCUMENT ID</th>
      <th>TECN</th>
      <th>COMMENT</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>SARANTSEV</td>
      <td>19</td>
      <td>EPJ A55 180</td>
      <td>A.V. Sarantsev et al. (BONN, PNPI)</td>
    </tr>
    <tr>
      <td>KAMANO</td>
      <td>15</td>
      <td>PR C92 025205</td>
      <td>H. Kamano et al. (ANL, OSAK)</td>
    </tr>
    <tr>
      <td>ZHANG</td>
      <td>13A</td>
      <td>PR C88 035205</td>
      <td>H. Zhang et al. (KSU)</td>
    </tr>
    <tr>
      <td>PDG</td>
      <td>82</td>
      <td>PL 111B 1</td>
      <td>M. Roos et al. (HELS, CIT, CERN)</td>
    </tr>
    <tr>
      <td>GOPAL</td>
      <td>80</td>
      <td>Toronto Conf. 159</td>
      <td>G.P. Gopal (RHEL) IPJ</td>
    </tr>
    <tr>
      <td>ALSTON...</td>
      <td>78</td>
      <td>PR D18 182</td>
      <td>M. Alston-Garnjost et al. (LBL, MTHO+) IPJ</td>
    </tr>
    <tr>
      <td>Also</td>
      <td>78</td>
      <td>PRL 38 1007</td>
      <td>M. Alston-Garnjost et al. (LBL, MTHO+) IPJ</td>
    </tr>
    <tr>
      <td>CAMERON</td>
      <td>77</td>
      <td>NP B143 189</td>
      <td>W. Cameron et al. (RHEL, LOIC) IPJ</td>
    </tr>
    <tr>
      <td>GOPAL</td>
      <td>77</td>
      <td>NP B131 399</td>
      <td>W. Cameron et al. (RHEL, LOIC) IPJ</td>
    </tr>
    <tr>
      <td>MARTIN</td>
      <td>77</td>
      <td>NP B127 349</td>
      <td>G.P. Gopal et al. (LOIC, RHEL) IPJ</td>
    </tr>
    <tr>
      <td>Also</td>
      <td>77</td>
      <td>NP B126 266</td>
      <td>B.R. Martin, M.K. Pidcock, R.G. Moorhouse (LOUC+) IPJ</td>
    </tr>
    <tr>
      <td>Also</td>
      <td>77</td>
      <td>NP B126 285</td>
      <td>B.R. Martin, M.K. Pidcock (LOUC) IPJ</td>
    </tr>
    <tr>
      <td>DEBELLEFON</td>
      <td>76</td>
      <td>NP B109 129</td>
      <td>A. de Bellefon, A. Berthon (CDFE) IPJ</td>
    </tr>
    <tr>
      <td>BAILLON</td>
      <td>75</td>
      <td>NP B94 39</td>
      <td>P.H. Baillon, P.J. Litchfield (CERN, RHEL) IPJ</td>
    </tr>
  </tbody>
</table>
<table><tbody><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td></tr><tr><td>Also</td><td></td><td>NP B87 157</td></tr><tr><td>DEVENISH</td><td>74B</td><td>NP B81 330</td></tr><tr><td>KANE</td><td>74</td><td>LBL-2452</td></tr><tr><td>PREVOST</td><td>74</td><td>NP B69 246</td></tr><tr><td>BARLETTA</td><td>72</td><td>NP B40 45</td></tr><tr><td>Also</td><td></td><td>PRL 17 841</td></tr><tr><td>ARMENTEROS 68C</td><td>68</td><td>NP B8 216</td></tr><tr><td>SIMS</td><td>68</td><td>PRL 21 1413</td></tr><tr><td>ARMENTEROS 67C</td><td>67</td><td>ZPHY 202 486</td></tr><tr><td>UHLIG</td><td>67</td><td>PR 155 1448</td></tr><tr><td>ARMENTEROS 65C</td><td>63</td><td>PL 19 338</td></tr><tr><td>GALTIERI</td><td>63</td><td>PL 6 296</td></tr></tbody></table>

<table><tbody><tr><td>A.J. van Horn</td><td>(LBL)UP</td></tr><tr><td>A.J. van Horn</td><td>(LBL)UP</td></tr><tr><td>R.C.E. Devenish, C.D. Froggatt, B.R. Martin</td><td>(DESY+)</td></tr><tr><td>D.F. Kane</td><td>(LBL)UP</td></tr><tr><td>J. Prevost et al.</td><td>(SACL, CERN, HEID)</td></tr><tr><td>W.A. Barletta</td><td>(EFI)UP</td></tr><tr><td>S. Fenster et al.</td><td>(CHIC, ANL, CERN)UP</td></tr><tr><td>R. Armenteros et al.</td><td>(CERN, HEID, SACL)I</td></tr><tr><td>W.H. Sims et al.</td><td>(FSU, TUFTS, BRAN)</td></tr><tr><td>R. Armenteros et al.</td><td>(CERN, HEID, SACL)</td></tr><tr><td>R.P. Uhlig et al.</td><td>(UMD, NRL)</td></tr><tr><td>R. Armenteros et al.</td><td>(CERN, HEID, SACL)UP</td></tr><tr><td>A. Gattieri, A. Hussain, R. Tripp</td><td>(LRL)I</td></tr></tbody></table>

$$ \Sigma(1780) 3/2^+ $$

$$ I(J^P) = 1(\frac{3}{2}^+) \text{ Status: } * $$

OMITTED FROM SUMMARY TABLE
was $\Sigma(1730)$

## $\Sigma(1780)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>1730 to 1830 (≈ 1780) OUR ESTIMATE</strong></td></tr><tr><td>1727 ± 27</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>1798 or 1802</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>1720 ± 30</td><td>2 BAILLON</td><td>75</td><td>IPWA <span style="text-decoration: overline;">K</span>N → Λπ</td></tr><tr><td>1840 ± 10</td><td>LANGBEIN</td><td>72</td><td>IPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr></tbody></table>

¹The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

²From solution 1 of BAILLON 75; not present in solution 2.

## $\Sigma(1780)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>100 to 300 (≈ 200) OUR ESTIMATE</strong></td></tr><tr><td>276 ± 87</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>93 or 93</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>120 ± 30</td><td>2 BAILLON</td><td>75</td><td>IPWA <span style="text-decoration: overline;">K</span>N → Λπ</td></tr><tr><td>120 ± 10</td><td>LANGBEIN</td><td>72</td><td>IPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr></tbody></table>

¹The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

²From solution 1 of BAILLON 75; not present in solution 2.

## $\Sigma(1780)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>i</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N<span style="text-decoration: overline;">K</span></td><td>(2.0 ± 1.0) %</td></tr><tr><td>Γ<sub>2</sub> Λπ</td><td>(70 ± 17) %</td></tr><tr><td>Γ<sub>3</sub> Σπ</td><td>(12 ± 6) %</td></tr></tbody></table>

## $\Sigma(1780)$ BRANCHING RATIOS

<table><thead><tr><th>Γ(N<span style="text-decoration: overline;">K</span>) / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.02 ± 0.01</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr></tbody></table>

<table><thead><tr><th>Γ(Λπ) / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.70 ± 0.17</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr></tbody></table>

<table><thead><tr><th>Γ(Σπ) / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.12 ± 0.06</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr></tbody></table>

## $\Sigma(1780)$ REFERENCES

<table><tbody><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td><td>(KSU)</td></tr><tr><td>MARTIN</td><td>77</td><td>NP B127 349</td><td></td></tr><tr><td>BAILLON</td><td>75</td><td>NP B94 39</td><td></td></tr><tr><td>LANGBEIN</td><td>72</td><td>NP B47 477</td><td></td></tr></tbody></table>

<table><tbody><tr><td>H. Zhang et al.</td><td>(KSU)</td></tr><tr><td>B.R. Martin, M.K. Pidcock, R.G. Moorhouse</td><td>(LOUC+)</td></tr><tr><td>P.H. Baillon, P.J. Litchfield</td><td>(CERN, RHEL)</td></tr><tr><td>W. Langbein, F. Wagner</td><td>(MPIM)</td></tr></tbody></table>

$$ \Sigma(1880) 1/2^+ $$

$$ I(J^P) = 1(\frac{1}{2}^+) \text{ Status: } ** $$

OMITTED FROM SUMMARY TABLE

A $P_{11}$ resonance is suggested by several partial-wave analyses, but with wide variations in the mass and other parameters. We list here all claims which lie well above the $P_{11}$ $\Sigma(1770)$.

## $\Sigma(1880)$ POLE POSITION

<table><thead><tr><th>REAL PART<br>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

## $-2 \times \text{IMAGINARY PART}$

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>270</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr></tbody></table>

## $\Sigma(1880)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>1820 to 1940 (≈ 1880) OUR ESTIMATE</strong></td></tr><tr><td>1821 ± 17</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>1826 ± 20</td><td>GOPAL</td><td>80</td><td>DPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td></tr><tr><td>1870 ± 10</td><td>CAMERON</td><td>78B</td><td>DPWA K<sup>-</sup> p → N<span style="text-decoration: overline;">K</span>*</td></tr><tr><td>1847 or 1863</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>1960 ± 30</td><td>2 BAILLON</td><td>75</td><td>IPWA <span style="text-decoration: overline;">K</span>N → Λπ</td></tr><tr><td>1985 ± 50</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>1898</td><td>3 LEA</td><td>73</td><td>DPWA Multichannel K-matrix</td></tr><tr><td>~ 1850</td><td>ARMENTEROS70</td><td>IPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td><td></td></tr><tr><td>1950 ± 50</td><td>BARBARO...</td><td>70</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr><tr><td>1920 ± 30</td><td>LITCHFIELD</td><td>70</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr><tr><td>1850</td><td>BAILEY</td><td>69</td><td>DPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td></tr><tr><td>1882 ± 40</td><td>SMART</td><td>68</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr></tbody></table>

## $\Sigma(1880)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>100 to 300 (≈ 200) OUR ESTIMATE</strong></td></tr><tr><td>300 ± 59</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>86 ± 15</td><td>GOPAL</td><td>80</td><td>DPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td></tr><tr><td>80 ± 10</td><td>CAMERON</td><td>78B</td><td>DPWA K<sup>-</sup> p → N<span style="text-decoration: overline;">K</span>*</td></tr><tr><td>216 or 220</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>260 ± 40</td><td>2 BAILLON</td><td>75</td><td>IPWA <span style="text-decoration: overline;">K</span>N → Λπ</td></tr><tr><td>220 ± 140</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>222</td><td>3 LEA</td><td>73</td><td>DPWA Multichannel K-matrix</td></tr><tr><td>~ 30</td><td>ARMENTEROS70</td><td>IPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td><td></td></tr><tr><td>200 ± 50</td><td>BARBARO...</td><td>70</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr><tr><td>170 ± 40</td><td>LITCHFIELD</td><td>70</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr><tr><td>200</td><td>BAILEY</td><td>69</td><td>DPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td></tr><tr><td>222 ± 150</td><td>SMART</td><td>68</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr></tbody></table>

## $\Sigma(1880)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>i</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N<span style="text-decoration: overline;">K</span></td><td>0.10 to 0.30 (≈ 0.20)</td></tr><tr><td>Γ<sub>2</sub> Λπ</td><td></td></tr><tr><td>Γ<sub>3</sub> Σπ</td><td></td></tr><tr><td>Γ<sub>4</sub> Λ(1520)π, D-wave</td><td>(2.0 ± 1.0) %</td></tr><tr><td>Γ<sub>5</sub> N<span style="text-decoration: overline;">K</span>*</td><td>(892), S=1/2, P-wave</td></tr><tr><td>Γ<sub>6</sub> N<span style="text-decoration: overline;">K</span>*</td><td>(892), S=3/2, P-wave</td></tr><tr><td>Γ<sub>7</sub> Δ(1232)<span style="text-decoration: overline;">K</span>, P-wave</td><td>(39 ± 8) %</td></tr></tbody></table>

## $\Sigma(1880)$ BRANCHING RATIOS

See "Sign conventions for resonance couplings" in the Note on $\Lambda$ and $\Sigma$ Resonances.

<table><thead><tr><th>Γ(N<span style="text-decoration: overline;">K</span>) / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4"><strong>0.10 to 0.30 (≈ 0.20) OUR ESTIMATE</strong></td></tr><tr><td>0.10 ± 0.03</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr><tr><td>0.06 ± 0.02</td><td>GOPAL</td><td>80</td><td>DPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td></tr><tr><td>0.27 or 0.27</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>0.31</td><td>3 LEA</td><td>73</td><td>DPWA Multichannel K-matrix</td></tr><tr><td>0.20</td><td>ARMENTEROS70</td><td>IPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td><td></td></tr><tr><td>0.22</td><td>BAILEY</td><td>69</td><td>DPWA <span style="text-decoration: overline;">K</span>N → <span style="text-decoration: overline;">K</span>N</td></tr></tbody></table>

<table><thead><tr><th>Γ(Γ<sub>i</sub>Γ<sub>f</sub>)<sup>1/2</sup> / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>-0.24 or -0.24</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>-0.12 ± 0.02</td><td>2 BAILLON</td><td>75</td><td>IPWA <span style="text-decoration: overline;">K</span>N → Λπ</td></tr><tr><td>+0.05 <sup>+0.07</sup><sub>-0.02</sub></td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>-0.169 ± 0.119</td><td>DEVENISH</td><td>74B</td><td>Fixed-t dispersion rel.</td></tr><tr><td>-0.30</td><td>3 LEA</td><td>73</td><td>DPWA Multichannel K-matrix</td></tr><tr><td>-0.09 ± 0.04</td><td>BARBARO...</td><td>70</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr><tr><td>-0.14 ± 0.03</td><td>LITCHFIELD</td><td>70</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr><tr><td>-0.11 ± 0.03</td><td>SMART</td><td>68</td><td>DPWA K<sup>-</sup> N → Λπ</td></tr></tbody></table>

<table><thead><tr><th>Γ(Γ<sub>i</sub>Γ<sub>f</sub>)<sup>1/2</sup> / Γ<sub>total</sub></th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.30 or +0.29</td><td>1 MARTIN</td><td>77</td><td>DPWA <span style="text-decoration: overline;">K</span>N multichannel</td></tr><tr><td>not seen</td><td>3 LEA</td><td>73</td><td>DPWA Multichannel K-matrix</td></tr></tbody></table>
$$ \Gamma(\Lambda(1520)\pi, \text{D-wave})/\Gamma_{\text{total}} \qquad \Gamma_4/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.02±0.01</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr></tbody></table>

$$ (\Gamma_1\Gamma_f)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \rightarrow \Sigma(1880) \rightarrow N\bar{K}^*(892), S=1/2, \text{P-wave} \quad (\Gamma_1\Gamma_5)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>-0.05±0.03</td><td>4 CAMERON</td><td>78B</td><td>DPWA K<sup>-</sup>p → N<span style="text-decoration: overline">K</span>*</td></tr></tbody></table>

$$ (\Gamma_1\Gamma_f)^{1/2}/\Gamma_{\text{total}} \text{ in } N\bar{K} \rightarrow \Sigma(1880) \rightarrow N\bar{K}^*(892), S=3/2, \text{P-wave} \quad (\Gamma_1\Gamma_6)^{1/2}/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>+0.11±0.03</td><td>CAMERON</td><td>78B</td><td>DPWA K<sup>-</sup>p → N<span style="text-decoration: overline">K</span>*</td></tr></tbody></table>

$$ \Gamma(\Delta(1232)\bar{K}, \text{P-wave})/\Gamma_{\text{total}} \qquad \Gamma_7/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.39±0.08</td><td>ZHANG</td><td>13A</td><td>DPWA Multichannel</td></tr></tbody></table>

### $\Sigma(1880)$ FOOTNOTES

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

² From solution 1 of BAILLON 75; not present in solution 2.

³ Only unconstrained states from table 1 of LEA 73 are listed.

⁴ The published sign has been changed to be in accord with the baryon-first convention.

### $\Sigma(1880)$ REFERENCES

<table><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td><td>(KSU)</td></tr><tr><td>GOPAL</td><td>80</td><td>Toronto Conf. 159</td><td>(RHEL) IJP</td></tr><tr><td>CAMERON</td><td>78B</td><td>NP B146 327</td><td>(RHEL, LOIC) IJP</td></tr><tr><td>MARTIN</td><td>77</td><td>NP B127 349</td><td>B.R. Martin, M.K. Pidcock, R.G. Moorhouse (LOUC+) IJP</td></tr><tr><td>Also</td><td></td><td>NP B126 266</td><td>(LOUC)</td></tr><tr><td>Also</td><td></td><td>NP B126 285</td><td>B.R. Martin, M.K. Pidcock (LOUC) IJP</td></tr><tr><td>BAILLON</td><td>75</td><td>NP B94 39</td><td>P.H. Baillon, P.J. Litchfield (CERN, RHEL) IJP</td></tr><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td><td>A.J. van Horn (LBL) IJP</td></tr><tr><td>Also</td><td></td><td>NP B87 157</td><td>A.J. van Horn (LBL) IJP</td></tr><tr><td>DEVENISH</td><td>74B</td><td>NP B81 330</td><td>R.C.E. Devenish, C.D. Froggatt, B.R. Martin (DESV+) IJP</td></tr><tr><td>LEA</td><td>73</td><td>NP B56 77</td><td>A.T. Lea et al. (RHEL, LOUC, GLAS, AARH) IJP</td></tr><tr><td>ARMENTEROS</td><td>70</td><td>Duke Conf. 123</td><td>R. Armenteros et al. (CERN, HEID, SACL) IJP</td></tr><tr><td>Hyperon Resonances, 1970</td><td></td><td></td><td></td></tr><tr><td>BARBARO</td><td>70</td><td>Duke Conf. 173</td><td>A. Barbaro-Galtieri (LRL) IJP</td></tr><tr><td>Hyperon Resonances, 1970</td><td></td><td></td><td></td></tr><tr><td>LITCHFIELD</td><td>70</td><td>NP B22 269</td><td>P.J. Litchfield (RHEL) IJP</td></tr><tr><td>BAILEY</td><td>69</td><td>Thesis UCRL 50617</td><td>J.M. Bailey (LLL) IJP</td></tr><tr><td>SMART</td><td>68</td><td>PR 169 1330</td><td>W.M. Smart (LRL) IJP</td></tr></table>

$$ \Sigma(1900) 1/2^{-} $$

$$ I(J^P) = 1(\frac{1}{2}^{-}) \quad \text{Status: **} $$

OMITTED FROM SUMMARY TABLE

### $\Sigma(1900)$ POLE POSITION

#### REAL PART

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>1936±10</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

#### -2×IMAGINARY PART

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>150±25</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

### $\Sigma(1900)$ POLE RESIDUES

The normalized residue is the residue divided by $\Gamma_{pole}/2$.

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → N<span style="text-decoration: overline">K</span></th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.45±0.09</td><td>90 ± 25</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → Σπ</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.38±0.08</td><td>95 ± 20</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → Ση</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.03±0.01</td><td>20 ± 20</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → Λπ</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.14±0.05</td><td>-160 ± 50</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → ΞK</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.08±0.05</td><td>75 ± 25</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → Σ(1385)π</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.16±0.05</td><td>40 ± 30</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → Λ(1520)π</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.04±0.02</td><td>-25 ± 40</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → Δ<span style="text-decoration: overline">K</span></th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.11±0.04</td><td>60 ± 30</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → N<span style="text-decoration: overline">K</span>* (892), S=1/2, S-wave</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.17±0.06</td><td>50 ± 50</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

<table><thead><tr><th colspan="2">Normalized residue in N<span style="text-decoration: overline">K</span> → Σ(1900) → N<span style="text-decoration: overline">K</span>* (892), S=3/2, D-wave</th><th>TECN</th><th>COMMENT</th></tr><tr><th>MODULUS</th><th>PHASE (°)</th><th></th><th></th></tr></thead><tbody><tr><td>0.05±0.04</td><td></td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

### $\Sigma(1900)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

#### 1900 to 1950 (≈ 1925) OUR ESTIMATE

<table><tr><td>1938±12</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>1900±21</td><td>ZHANG</td><td>13A</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>1944±15</td><td>GOPAL</td><td>80</td><td>DPWA N<span style="text-decoration: overline">K</span> → N<span style="text-decoration: overline">K</span></td></tr><tr><td>1755 or 1834</td><td>1 MARTIN</td><td>77</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>2004±40</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup>p → Λπ<sup>0</sup></td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1955±15</td><td>GOPAL</td><td>77</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

### $\Sigma(1900)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead></table>

#### 140 to 190 (≈ 165) OUR ESTIMATE

<table><tr><td>155±30</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>191±47</td><td>ZHANG</td><td>13A</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>215±25</td><td>GOPAL</td><td>80</td><td>DPWA N<span style="text-decoration: overline">K</span> → N<span style="text-decoration: overline">K</span></td></tr><tr><td>413 or 450</td><td>1 MARTIN</td><td>77</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>116±40</td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup>p → Λπ<sup>0</sup></td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>170±40</td><td>GOPAL</td><td>77</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></table>

¹ The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

### $\Sigma(1900)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>f</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N<span style="text-decoration: overline">K</span></td><td>0.40 to 0.70 (≈ 0.55)</td></tr><tr><td>Γ<sub>2</sub> Σπ</td><td>0.10 to 0.40 (≈ 0.25)</td></tr><tr><td>Γ<sub>3</sub> Ση</td><td>(1.0 ± 1.0) %</td></tr><tr><td>Γ<sub>4</sub> Λπ</td><td>(6.0 ± 2.0) %</td></tr><tr><td>Γ<sub>5</sub> ΞK</td><td>(3.0 ± 2.0) %</td></tr><tr><td>Γ<sub>6</sub> Σ(1385)π</td><td>(7.0 ± 3.0) %</td></tr><tr><td>Γ<sub>7</sub> Λ(1520)π</td><td></td></tr><tr><td>Γ<sub>8</sub> Δ<span style="text-decoration: overline">K</span></td><td>(2.5 ± 1.0) %</td></tr><tr><td>Γ<sub>9</sub> N<span style="text-decoration: overline">K</span>* (892), S=1/2, S-wave</td><td>(7.0 ± 3.0) %</td></tr><tr><td>Γ<sub>10</sub> N<span style="text-decoration: overline">K</span>* (892), S=3/2, D-wave</td><td></td></tr></tbody></table>

### $\Sigma(1900)$ BRANCHING RATIOS

$$ \Gamma(\bar{N}\bar{K})/\Gamma_{\text{total}} \qquad \Gamma_1/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.40 to 0.70 (≈ 0.55) OUR ESTIMATE</td><td></td><td></td><td></td></tr><tr><td>0.45±0.09</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>0.67±0.17</td><td>ZHANG</td><td>13A</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

$$ \Gamma(\Sigma\pi)/\Gamma_{\text{total}} \qquad \Gamma_2/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.10 to 0.40 (≈ 0.25) OUR ESTIMATE</td><td></td><td></td><td></td></tr><tr><td>0.33±0.07</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr><tr><td>0.10±0.05</td><td>ZHANG</td><td>13A</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

$$ \Gamma(\Sigma\eta)/\Gamma_{\text{total}} \qquad \Gamma_3/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.01±0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

$$ \Gamma(\Lambda\pi)/\Gamma_{\text{total}} \qquad \Gamma_4/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.06±0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

$$ \Gamma(\Xi K)/\Gamma_{\text{total}} \qquad \Gamma_5/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.03±0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>

$$ \Gamma(\Sigma(1385)\pi)/\Gamma_{\text{total}} \qquad \Gamma_6/\Gamma $$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.07±0.03</td><td>SARANTSEV</td><td>19</td><td>DPWA N<span style="text-decoration: overline">K</span> multichannel</td></tr></tbody></table>
$\Gamma(\Lambda(1520)\pi)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th></tr></thead><tbody><tr><td>&lt;0.01</td></tr></tbody></table>

$\Gamma(\Delta\bar{K})/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th></tr></thead><tbody><tr><td>0.025 ± 0.010</td></tr></tbody></table>

$\Gamma(N\bar{K}^*(892), S=1/2, S-wave)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th></tr></thead><tbody><tr><td>0.07 ± 0.03</td></tr></tbody></table>

$\Gamma(N\bar{K}^*(892), S=3/2, D-wave)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th></tr></thead><tbody><tr><td>&lt;0.01</td></tr></tbody></table>

$\Gamma_7/\Gamma$

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma_8/\Gamma$

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma_{10}/\Gamma$

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

## $\Sigma(1900)$ REFERENCES

<table><tr><td>SARANTSEV</td><td>19</td><td>EPJ A55 180</td><td>A.V. Sarantsev et al. (BONN, PNPI)</td></tr><tr><td>ZHANG</td><td>13A</td><td>PR C88 035205</td><td>H. Zhang et al. (KSU)</td></tr><tr><td>GOPAL</td><td>80</td><td>Toronto Conf. 159</td><td>G.P. Gopal (RHEL)</td></tr><tr><td>GOPAL</td><td>77</td><td>NP B119 362</td><td>G.P. Gopal et al. (LOIC, RHEL)</td></tr><tr><td>MARTIN</td><td>77</td><td>NP B127 349</td><td>B.R. Martin, M.K. Pidcock, R.G. Moorhouse (LOUC+)</td></tr><tr><td>VANHORN</td><td>75</td><td>NP B87 145</td><td>A.J. van Horn (LBL)</td></tr></table>

$\Sigma(1910) 3/2^-$

$I(J^P) = 1(3/2^-)$ Status: ***

was $\Sigma(1940)$

For results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters **111B** 1 (1982).

Not all analyses require this state. It is not required by the GOYAL 77 analysis of $K^-n \to (\Sigma\pi)^-$ nor by the GOPAL 80 analysis of $K^-n \to K^-n$. See also HEMINGWAY 75.

## $\Sigma(1910)$ POLE RESIDUES

The normalized residue is the residue divided by $\Gamma_{\text{pole}}/2$.

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to N\bar{K}$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.03 ± 0.02</td><td>-95 ± 60</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to \Sigma\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.16 ± 0.04</td><td>-160 ± 15</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to \Lambda\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.04 ± 0.03</td><td>25 ± 25</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to \Xi\pi$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.01 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to \Lambda(1520)\pi, P-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.01 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to \Lambda(1520)\pi, F-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>~ 0</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to \Delta\bar{K}, S-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.03 ± 0.01</td><td>120 ± 20</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to N\bar{K}^*(892), S=3/2, S-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.03 ± 0.02</td><td>20 ± 35</td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to N\bar{K}^*(892), S=1/2, D-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.02 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\text{Normalized residue in } N\bar{K} \to \Sigma(1910) \to N\bar{K}^*(892), S=3/2, D-wave$

<table><thead><tr><th>MODULUS</th><th>PHASE (°)</th></tr></thead><tbody><tr><td>0.01 ± 0.01</td><td></td></tr></tbody></table>

<table><thead><tr><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

## $\Sigma(1910)$ MASS

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4">1870 to 1950 (≈ 1910) OUR ESTIMATE</td></tr><tr><td>1878 ± 12</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>1920 ± 50</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr></tbody></table>

<table><tr><td>1950 ± 30</td><td>BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>1949<sup>+40</sup><sub>-60</sub></td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>1935 ± 80</td><td>KANE</td><td>74</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td>1940 ± 20</td><td>LITCHFIELD</td><td>74B</td><td>DPWA K<sup>-</sup> p → Λ(1520) π<sup>0</sup></td></tr><tr><td>1950 ± 20</td><td>LITCHFIELD</td><td>74C</td><td>DPWA K<sup>-</sup> p → Δ(1232) K</td></tr></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>1886 or 1893</td><td><sup>1</sup> MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>1940</td><td>DEBELLEFON</td><td>76</td><td>IPWA K<sup>-</sup> p → Λπ<sup>0</sup>, F<sub>17</sub> wave</td></tr></table>

## $\Sigma(1910)$ WIDTH

<table><thead><tr><th>VALUE (MeV)</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4">150 to 300 (≈ 220) OUR ESTIMATE</td></tr><tr><td>224 ± 25</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>170 ± 25</td><td>CAMERON</td><td>78B</td><td>DPWA K<sup>-</sup> p → N\bar{K}^*</td></tr><tr><td>300 ± 80</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>150 ± 75</td><td>BAILLON</td><td>75</td><td>IPWA K N → Λπ</td></tr><tr><td>160<sup>+70</sup><sub>-40</sub></td><td>VANHORN</td><td>75</td><td>DPWA K<sup>-</sup> p → Λπ<sup>0</sup></td></tr><tr><td>330 ± 80</td><td>KANE</td><td>74</td><td>DPWA K<sup>-</sup> p → Σπ</td></tr><tr><td>60 ± 20</td><td>LITCHFIELD</td><td>74B</td><td>DPWA K<sup>-</sup> p → Λ(1520) π<sup>0</sup></td></tr><tr><td>70<sup>+30</sup><sub>-20</sub></td><td>LITCHFIELD</td><td>74C</td><td>DPWA K<sup>-</sup> p → Δ(1232) K</td></tr></tbody></table>

• • • We do not use the following data for averages, fits, limits, etc. • • •

<table><tr><td>157 or 159</td><td><sup>1</sup> MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr></table>

## $\Sigma(1910)$ DECAY MODES

<table><thead><tr><th>Mode</th><th>Fraction (Γ<sub>f</sub>/Γ)</th></tr></thead><tbody><tr><td>Γ<sub>1</sub> N\bar{K}</td><td>0.01 to 0.05 (≈ 0.02)</td></tr><tr><td>Γ<sub>2</sub> Λπ</td><td>(6 ± 4)%</td></tr><tr><td>Γ<sub>3</sub> Σπ</td><td>(86 ± 21)%</td></tr><tr><td>Γ<sub>4</sub> ΞK</td><td></td></tr><tr><td>Γ<sub>5</sub> Σ(1385) π</td><td>seen</td></tr><tr><td>Γ<sub>6</sub> Σ(1385) π, S-wave</td><td></td></tr><tr><td>Γ<sub>7</sub> Λ(1520) π</td><td>seen</td></tr><tr><td>Γ<sub>8</sub> Λ(1520) π, P-wave</td><td></td></tr><tr><td>Γ<sub>9</sub> Λ(1520) π, F-wave</td><td></td></tr><tr><td>Γ<sub>10</sub> Δ(1232) K</td><td>(3.0 ± 1.0)%</td></tr><tr><td>Γ<sub>11</sub> Δ(1232) K, S-wave</td><td></td></tr><tr><td>Γ<sub>12</sub> Δ(1232) K, D-wave</td><td></td></tr><tr><td>Γ<sub>13</sub> N\bar{K}^*(892)</td><td>seen</td></tr><tr><td>Γ<sub>14</sub> N\bar{K}^*(892), S=3/2, S-wave</td><td></td></tr><tr><td>Γ<sub>15</sub> N\bar{K}^*(892), S=1/2, D-wave</td><td>(1.0 ± 1.0)%</td></tr><tr><td>Γ<sub>16</sub> N\bar{K}^*(892), S=3/2, D-wave</td><td></td></tr></tbody></table>

## $\Sigma(1910)$ BRANCHING RATIOS

See "Sign conventions for resonance couplings" in the Note on $\Lambda$ and $\Sigma$ Resonances.

$\Gamma(N\bar{K})/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td colspan="4">0.01 to 0.05 (≈ 0.02) OUR ESTIMATE</td></tr><tr><td>0.03 ± 0.02</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr><tr><td>&lt;0.04</td><td>GOPAL</td><td>77</td><td>DPWA K N multichannel</td></tr><tr><td>0.14 or 0.13</td><td><sup>1</sup> MARTIN</td><td>77</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma(\Lambda\pi)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.06 ± 0.04</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma(\Sigma\pi)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.86 ± 0.21</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma(\Xi K)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>~ 0</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma(\Lambda(1520)\pi, P-wave)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>~ 0</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma(\Lambda(1520)\pi, F-wave)/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>~ 0</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>

$\Gamma(\Delta(1232)\bar{K})/\Gamma_{\text{total}}$

<table><thead><tr><th>VALUE</th><th>DOCUMENT ID</th><th>TECN</th><th>COMMENT</th></tr></thead><tbody><tr><td>0.03 ± 0.01</td><td>SARANTSEV</td><td>19</td><td>DPWA K N multichannel</td></tr></tbody></table>