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

Λ(1810) 1/2+I (J P ) = 0( 21 + ) Status:∗∗∗

Λ(1810) POLE POSITIONREAL PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1773± 7SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •402097 +− 11 KAMANO

15DPWA Multichannel

1780
ZHANG
13A DPWA Multichannel
1 From the preferred solution A in KAMANO 15. Solution B reports M = 1841 + 3 MeV.
−4−2×IMAGINARY PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT38± 14SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •64
166 +− 121 KAMANO

15DPWA Multichannel

64
ZHANG
13A DPWA Multichannel
1 From the preferred solution A in KAMANO 15. Solution B Reports Γ = 62 + 6 MeV.
−4

Λ(1810) POLE RESIDUESThe normalized residue is the residue divided by Γpole /2.

Normalized residue in N K → Λ(1810) → N K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.018± 0.008
65 ± 26SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.205− 6315 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Normalized residue in N K → Λ(1810) → Σ π
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.045 ± 0.020 − 143 ± 24
SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.03252915 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Normalized residue in N K → Λ(1810) → Λ η
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.155
165
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

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Page 1Created: 5/31/2024 10:12

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

Normalized residue in N K → Λ(1810) → Λ σ
MODULUSPHASE (◦ )DOCUMENT ID

0.055± 0.020

30 ± 16SARANTSEVTECN19COMMENTDPWA K N multichannel

Normalized residue in N K → Λ(1810) → Ξ K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.0937− 64
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Normalized residue in N K → Λ(1810) → Σ (1385)π
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT− 50 ± 30
0.08 ± 0.03
SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.244− 1015 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Normalized residue in N K → Λ(1810) → N K ∗ (892), S=1/2, P-wave
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.03 ± 0.03
SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.159− 9715 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Normalized residue in N K → Λ(1810) → N K ∗ (892), S=3/2, P-wave
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.05 ± 0.04
SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.0497215 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Λ(1810) MASSVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1740 to 1840 (≈ 1790) OUR ESTIMATE
1773± 7SARANTSEV 19 DPWA K N multichannel
1821± 10ZHANG
13A DPWA Multichannel
1841± 20GOPAL
80 DPWA K N → K N
1735± 5CARROLL
76 DPWA Isospin-0 total σ1746± 10
PREVOST
74 DPWA K − N → Σ (1385) π
1780± 20LANGBEIN
72 IPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1853± 201861 or 1953
1755
1800
1750
1690± 101740
1745

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GOPAL
1 MARTIN

77
77
KIM
71
ARMENTEROS70
ARMENTEROS70
BARBARO-... 70
BAILEY
69
ARMENTEROS68B

DPWA K N multichannel
DPWA K N multichannel
DPWA K-matrix analysis
HBC
KN → KN
KN → Σπ
HBC
KN → Σπ
HBC
DPWA K N → K N
KN → KN
HBCPage 2

Created: 5/31/2024 10:12

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

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

Λ(1810) WIDTHVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

50 to 170 (≈ 110) OUR ESTIMATE
39± 15SARANTSEV 19 DPWA K N multichannel
174± 50ZHANG
13A DPWA Multichannel
164± 20GOPAL
80 DPWA K N → K N
90± 20CAMERON78B DPWA K − p → N K ∗46± 20
PREVOST
74 DPWA K − N → Σ (1385) π
120± 10LANGBEIN
72 IPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •166± 20GOPAL
77 DPWA K N multichannel
1 MARTIN535 or 585
77 DPWA K N multichannel
28
CARROLL
76 DPWA Isospin-0 total σ
35
KIM
71 DPWA K-matrix analysis
KN → KN
30
ARMENTEROS70 HBC
KN → Σπ70
ARMENTEROS70 HBC
22
BARBARO-... 70 HBC
KN → Σπ300
BAILEY
69 DPWA K N → K N
147
ARMENTEROS68B HBC
1 The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.

Λ(1810) DECAY MODESΓ1Γ2Γ3Γ4Γ5Γ6Γ7Γ8ModeFraction (Γi /Γ)NKΣπΛη
ΞKΣ (1385)πN K ∗ (892)N K ∗ (892), S=1/2, P-wave
N K ∗ (892), S=3/2, P-wave

0.05 to 0.35
(16± 5) %(40± 15) %30–60 %

Λ(1810) BRANCHING RATIOSΓ N K /Γtotal
VALUE

Γ1 /Γ
DOCUMENT ID

TECNCOMMENT

0.05 to 0.35 OUR ESTIMATE
0.025± 0.013
SARANTSEV 19 DPWA K N multichannel
0.19 ± 0.08
ZHANG
13A DPWA K N multichannel
0.24 ± 0.04
GOPAL
80 DPWA K N → K N
0.36 ± 0.05
LANGBEIN
72 IPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.225
15 DPWA K N multichannel
0.21 ± 0.04

GOPAL

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Page 377

DPWA See GOPAL 80

Created: 5/31/2024 10:12

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

2 MARTIN
0.52 or 0.49
77 DPWA K N multichannel
0.30
KIM
71 DPWA K-matrix analysis
0.15
ARMENTEROS70 DPWA K N → K N
0.55
BAILEY
69 DPWA K N → K N0.4ARMENTEROS68B DPWA K N → K N
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.

Γ Σ π /Γtotal
VALUE

Γ2 /Γ
DOCUMENT ID

TECNCOMMENT

0.16 ± 0.05
SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.009
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Γ Λ η /Γtotal
VALUE

Γ3 /Γ
DOCUMENT ID

TECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.111
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Γ Ξ K /Γtotal
VALUE

Γ4 /Γ
DOCUMENT ID

TECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.051
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Γ Σ (1385)π /Γtotal
VALUE

Γ5 /Γ
DOCUMENT ID

TECNCOMMENT

0.40 ± 0.15
SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.600
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.

Γ N K ∗ (892), S=1/2, P-wave /ΓtotalVALUE

Γ7 /Γ

DOCUMENT ID

TECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1 KAMANO
0.003
15 DPWA Multichannel
1 From the preferred solution A in KAMANO 15.
1/(Γi Γf ) 2 /Γtotal in N K → Λ(1810) → Σ π
VALUE

1/(Γ1 Γ2 ) 2 /ΓDOCUMENT ID

TECNCOMMENT− 0.08± 0.05
ZHANG
13A DPWA Multichannel− 0.24± 0.04
GOPAL
77 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 MARTIN+ 0.25 or + 0.23
77 DPWA K N multichannel< 0.01LANGBEIN

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Page 472

IPWA

K N multichannel

Created: 5/31/2024 10:12

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

0.17
KIM
71 DPWA K-matrix analysis
2 ARMENTEROS70 DPWA K N → Σ π+ 0.20
− 0.13± 0.03
BARBARO-... 70 DPWA K N → Σ π
1 The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner fit.
2 The published sign has been changed to be in accord with the baryon-first convention.
1/(Γi Γf ) 2 /Γtotal in N K → Λ(1810) → Σ (1385)πVALUEDOCUMENT ID+ 0.18± 0.10

PREVOST1/(Γ1 Γ5 ) 2 /ΓTECN74COMMENTDPWA K − N → Σ (1385) π

1/1/(Γi Γf ) 2 /Γtotal in N K → Λ(1810) → N K ∗ (892), S=1/2, P-wave (Γ1 Γ7 ) 2 /ΓVALUE

DOCUMENT IDTECNCOMMENT

1 CAMERON− 0.14± 0.03
78B DPWA K − p → N K ∗1 The published sign has been changed to be in accord with the baryon-first convention.
1/1/(Γi Γf ) 2 /Γtotal in N K → Λ(1810) → N K ∗ (892), S=3/2, P-wave (Γ1 Γ8 ) 2 /ΓVALUE

DOCUMENT ID+ 0.38± 0.06
+ 0.35± 0.06

ZHANG
CAMERONTECNCOMMENT

13A DPWA Multichannel
78B DPWA K − p → N K ∗Λ(1810) REFERENCESSARANTSEV 19
EPJ A55 180
KAMANO15
PR C92 025205
ZHANG
13A PR C88 035205
GOPAL
80
Toronto Conf. 159
CAMERON
78B NP B146 327
GOPAL77
NP B119 362
MARTIN77
NP B127 349
Also
NP B126 266
Also
NP B126 285
CARROLL76
PRL 37 806
PREVOST74
NP B69 246
LANGBEIN72
NP B47 477
KIM71
PRL 27 356
Also
Duke Conf. 161
Hyperon Resonances, 1970
ARMENTEROS 70
Duke Conf. 123
Hyperon Resonances, 1970
BARBARO-... 70
Duke Conf. 173
Hyperon Resonances, 1970
BAILEY
69
Thesis UCRL 50617
ARMENTEROS 68B NP B8 195

https://pdg.lbl.gov

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Page 5(CERN, HEID, SACL) IJP(LRL) IJP
(LLL) IJP(CERN, HEID, SACL) IJP

Created: 5/31/2024 10:12