Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

N(1990) 7/2+I (J P ) = 21 ( 27 + ) Status:∗∗OMITTED FROM SUMMARY TABLE
Older and obsolete values are listed and referenced in the 2014 edition, Chinese Physics C38 070001 (2014).

N(1990) POLE POSITIONREAL PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1861± 5ROENCHEN 22 DPWA Multichannel
2030± 65
ANISOVICH
12A DPWA Multichannel
1900± 30
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •
1913
1738
2301

HUNTROENCHEN
VRANA

19 DPWA Multichannel
15A DPWA Multichannel
00 DPWA Multichannel−2×IMAGINARY PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

72± 3
ROENCHEN 22 DPWA Multichannel
240± 60
ANISOVICH
12A DPWA Multichannel
260± 60
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •
163
188
202

HUNTROENCHEN
VRANA

19 DPWA Multichannel
15A DPWA Multichannel
00 DPWA Multichannel

N(1990) ELASTIC POLE RESIDUEMODULUS r
VALUE (MeV)

DOCUMENT ID

TECNCOMMENT0.16± 0.01
ROENCHEN 22 DPWA Multichannel
2 ±1
ANISOVICH
12A DPWA Multichannel
9 ±3
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •4.3

ROENCHEN

15A DPWA Multichannel

PHASE θVALUE (◦ )DOCUMENT ID

TECNCOMMENT− 119± 2
ROENCHEN 22 DPWA Multichannel
125± 65
ANISOVICH
12A DPWA Multichannel− 60± 30
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •− 70

ROENCHEN

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Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)∆(1990) INELASTIC POLE RESIDUE
The “normalized residue” is the residue divided by Γpole /2.

Normalized residue in N π → N(1990) → N η
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT− 43 ± 2
0.048± 0.001
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.013− 82

ROENCHEN

15A DPWA Multichannel

Normalized residue in N π → N(1990) → Λ K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.004± 0.001
133 ± 2
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.022− 111

ROENCHEN

15A DPWA Multichannel

Normalized residue in N π → N(1990) → Σ K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.010± 0.002− 54 ± 2
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.005

24ROENCHEN

15A DPWA Multichannel

N(1990) BREIT-WIGNER MASSVALUE (MeV)

DOCUMENT ID

TECNCOMMENT1950 to 2100 (≈ 2020) OUR ESTIMATE
1 HUNT2028± 1919 DPWA Multichannel
2060± 65
ANISOVICH
12A DPWA Multichannel
1970± 50
CUTKOSKY 80 IPWA π N → π N
2005± 150
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
1990± 45
12A DPWA Multichannel
2311± 16
1 Statistical error only.

VRANA00

DPWA Multichannel

N(1990) BREIT-WIGNER WIDTHVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

200 to 400 (≈ 300) OUR ESTIMATE
1 HUNT490± 110
19 DPWA Multichannel
240± 50
ANISOVICH
12A DPWA Multichannel
350± 120
CUTKOSKY 80 IPWA π N → π N
350± 100
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
203± 161
12A DPWA Multichannel
205± 72
1 Statistical error only.

VRANA

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Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

N(1990) DECAY MODESΓ1Γ2Γ3Γ4Γ5Γ6Γ7Γ8Γ9ModeFraction (Γi /Γ)NπNη
ΛKpγp γ , helicity=1/2
p γ , helicity=3/2nγn γ , helicity=1/2n γ , helicity=3/2

2–6 %
<3 %
5.9–6.1 %0.01–0.12%
0.003–0.042%
0.009–0.075 %
0.01–0.16 %0.003–0.066 %0.003–0.098 %N(1990) BRANCHING RATIOSΓ N π /Γtotal

Γ1 /Γ

VALUE (%)

DOCUMENT ID

TECNCOMMENT

2–6 % OUR ESTIMATE
1 HUNT
1.9± 0.4
19 DPWA Multichannel
2 ± 1
ANISOVICH
12A DPWA Multichannel
6 ± 2CUTKOSKY 80 IPWA π N → π N
4 ± 2
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
2 ± 1
12A DPWA Multichannel
22 ± 11
1 Statistical error only.

VRANA00

DPWA MultichannelΓ N η /Γtotal

Γ2 /Γ

VALUE (%)

DOCUMENT ID<3 % OUR ESTIMATE
1 ±11.7± 0.9
1 Statistical error only.

MUELLER
1 HUNTTECN

2019COMMENTDPWA Multichannel
DPWA MultichannelΓ Λ K /Γtotal

Γ3 /Γ

VALUE (%)

DOCUMENT ID

5.9–6.1 % OUR ESTIMATE
6.0± 0.1
1 Statistical error only.

1 HUNTTECN

19COMMENTDPWA Multichannel

N(1990) PHOTON DECAY AMPLITUDES AT THE POLE
N(1990) → p γ , helicity-1/2 amplitude A1/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID

TECNCOMMENT− 0.030± 0.008− 135 ± 13
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.029

67

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ROENCHENPage 315A DPWA Multichannel

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Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

N(1990) → p γ , helicity-3/2 amplitude A3/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID

TECNCOMMENT− 0.018± 0.006
53 ± 16
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.033

39

ROENCHEN

15A DPWA Multichannel

N(1990) → n γ , helicity-1/2 amplitude A1/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID− 0.032± 0.015

5 ± 20

ANISOVICHTECNCOMMENT

17E DPWA MultichannelN(1990) → n γ , helicity-3/2 amplitude A3/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID− 0.070± 0.025

0 ± 20

ANISOVICHTECNCOMMENT

17E DPWA Multichannel

N(1990) BREIT-WIGNER PHOTON DECAY AMPLITUDESN(1990) → p γ , helicity-1/2 amplitude A1/2
VALUE (GeV−1/2 )0.006± 0.003
0.040± 0.012
1 Statistical error only.

DOCUMENT ID

1 HUNT
ANISOVICHTECNCOMMENT

19 DPWA Multichannel
12A DPWA Multichannel

N(1990) → p γ , helicity-3/2 amplitude A3/2
VALUE (GeV−1/2 )− 0.055± 0.008
0.057± 0.012
1 Statistical error only.

DOCUMENT ID

1 HUNT
ANISOVICHTECNCOMMENT

19 DPWA Multichannel
12A DPWA Multichannel

N(1990) → n γ , helicity-1/2 amplitude A1/2
VALUE (GeV−1/2 )DOCUMENT ID

TECNCOMMENT

1 HUNT− 0.027± 0.024
19 DPWA Multichannel− 0.032± 0.015
ANISOVICH
17E DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •− 0.045± 0.020
1 Statistical error only.

ANISOVICH

13B DPWA Multichannel

N(1990) → n γ , helicity-3/2 amplitude A3/2
VALUE (GeV−1/2 )DOCUMENT ID

TECNCOMMENT

1 HUNT

0.051± 0.020
19 DPWA Multichannel− 0.072± 0.025
ANISOVICH
17E DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •− 0.052± 0.027
1 Statistical error only.

ANISOVICH

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Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

N(1990) REFERENCES
For early references, see Physics Letters 111B 1 (1982).
ROENCHENMUELLERHUNTANISOVICH
ROENCHENPDG
ANISOVICHANISOVICHSHRESTHAVRANACUTKOSKY
Also
HOEHLER
Also

22201917E
15A
1413B
12A
12A
008079EPJ A58 229
PL B803 135323
PR C99 055205
PR C96 055202
EPJ A51 70
CP C38 070001
EPJ A49 67
EPJ A48 15
PR C86 055203
PRPL 328 181
Toronto Conf. 19
PR D20 2839
PDAT 12-1
Toronto Conf. 3

https://pdg.lbl.gov

D. Roenchen et al.
(JULI, GWU, BONN+)
J. Mueller et al.
(CBELSA/TAPS Collab.)
B.C. Hunt, D.M. Manley
A.V. Anisovich et al.
(BONN, PNPI, JLAB+)
D. Roenchen et al.
K. Olive et al.
(PDG Collab.)
A.V. Anisovich et al.
A.V. Anisovich et al.
(BONN, PNPI)
M. Shrestha, D.M. Manley(KSU)
T.P. Vrana, S.A. Dytman, T.-S.H. Lee(PITT, ANL)
R.E. Cutkosky et al.
(CMU, LBL) IJP
R.E. Cutkosky et al.
(CMU, LBL) IJP
G. Hohler et al.
(KARLT) IJP
R. Koch(KARLT) IJP

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