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

I (J P ) = 0( 21 − ) Status:

Λ(1800) 1/2−∗∗∗Λ(1800) POLE POSITIONREAL PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1809± 9SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •
1729

ZHANG

13A DPWA Multichannel−2×IMAGINARY PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

205± 16SARANTSEV 19 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •198

ZHANG

13A DPWA Multichannel

Λ(1800) POLE RESIDUESThe normalized residue is the residue divided by Γpole /2.

Normalized residue in N K → Λ(1800) → N K
MODULUSPHASE (◦ )DOCUMENT ID

0.34± 0.07

103 ± 8SARANTSEVTECN

19COMMENTDPWA K N multichannel

Normalized residue in N K → Λ(1800) → Σ π
MODULUSPHASE (◦ )DOCUMENT ID

0.30± 0.06

− 123 ± 8

SARANTSEVTECN

19COMMENTDPWA K N multichannel

Normalized residue in N K → Λ(1800) → Λ η
MODULUSPHASE (◦ )DOCUMENT ID

0.06± 0.03

75 ± 10SARANTSEVTECNCOMMENT

19

DPWA K N multichannel

19

DPWA K N multichannel

Normalized residue in N K → Λ(1800) → Λ σ
MODULUSPHASE (◦ )DOCUMENT ID

0.24± 0.05

25 ± 10SARANTSEVTECNCOMMENT

Normalized residue in N K → Λ(1800) → Λ ω, S=1/2, S-wave
MODULUSPHASE (◦ )DOCUMENT ID

0.12± 0.04

− 114 ± 30

SARANTSEV

TECN

19

COMMENTDPWA K N multichannel

Normalized residue in N K → Λ(1800) → Λ ω, S=3/2, D-wave
MODULUSPHASE (◦ )DOCUMENT ID

0.08± 0.03

− 90 ± 17

SARANTSEVTECN

19COMMENTDPWA K N multichannel

Normalized residue in N K → Λ(1800) → Σ (1385)π
MODULUSPHASE (◦ )DOCUMENT ID

0.16± 0.06

− 140 ± 35

SARANTSEV

https://pdg.lbl.gov

Page 1TECN

19COMMENTDPWA K N multichannel

Created: 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(1800) → N K ∗ (892), S=1/2, S-wave
MODULUSPHASE (◦ )DOCUMENT ID

0.18± 0.06

65 ± 40SARANTSEVTECN19COMMENTDPWA K N multichannel

Normalized residue in N K → Λ(1800) → N K ∗ (892), S=3/2, D-wave
MODULUSPHASE (◦ )0.09± 0.07

DOCUMENT ID

SARANTSEVTECN

19COMMENTDPWA K N multichannel

Λ(1800) MASSVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1750 to 1850 (≈ 1800) OUR ESTIMATE
1811± 10SARANTSEV 19 DPWA K N multichannel
1783± 19ZHANG
13A DPWA K N multichannel
1841± 10GOPAL
80 DPWA K N → K N
1725± 20
ALSTON-...
78 DPWA K N → K N
1830± 20LANGBEIN
72 IPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1845± 101825± 201767 or 1842
1780
1872± 10MANLEYGOPAL
1 MARTIN
KIM
BRICMAN02777771
70B

DPWA K N multichannel
DPWA K N multichannel
DPWA K N multichannel
DPWA K-matrix analysis
DPWA K N → K N

Λ(1800) WIDTHVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

150 to 250 (≈ 200) OUR ESTIMATE
209± 18SARANTSEV 19 DPWA K N multichannel
256± 35ZHANG
13A DPWA K N multichannel
228± 20GOPAL
80 DPWA K N → K N
185± 20
ALSTON-...
78 DPWA K N → K N
70± 15LANGBEIN
72 IPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •518± 84230± 20435 or 473
40100± 20

MANLEYGOPAL
1 MARTIN
KIM
BRICMAN

0277
7771
70B

DPWA K N multichannel
DPWA K N multichannel
DPWA K N multichannel
DPWA K-matrix analysis
DPWA K N → K N

Λ(1800) DECAY MODES

Γ1
Γ2
Γ3
Γ4

ModeFraction (Γi /Γ)NKΣπΛσΣ (1385)π

25–40 %
seen

https://pdg.lbl.gov(15 ± 4) %seen

Page 2Created: 5/31/2024 10:12

Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)Γ5Γ6Γ7Γ8Λη
N K ∗ (892)N K ∗ (892), S=1/2, S-wave
N K ∗ (892), S=3/2, D-wave

0.01 to 0.10
seen

Λ(1800) BRANCHING RATIOS
See “Sign conventions for resonance couplings” in the Note on Λ and ΣResonances.

Γ N K /Γtotal
VALUE

Γ1 /Γ
DOCUMENT ID

TECNCOMMENT

0.25 to 0.40 OUR ESTIMATE
0.35± 0.07
SARANTSEV 19 DPWA K N multichannel
0.13± 0.06
ZHANG
13A DPWA K N multichannel
0.36± 0.04
GOPAL
80 DPWA K N → K N
0.28± 0.05
ALSTON-...
78 DPWA K N → K N
0.35± 0.15
LANGBEIN
72 IPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.24± 0.10
0.37± 0.05
1.21 or 0.70
0.80
0.18± 0.02

MANLEYGOPAL
1 MARTIN
KIM
BRICMAN027777
71
70B

DPWA K N multichannel
DPWA See GOPAL 80
DPWA K N multichannel
DPWA K-matrix analysis
DPWA K N → K NΓ Σ π /Γtotal

Γ2 /Γ

VALUE

DOCUMENT ID0.27± 0.06

SARANTSEVTECN

19COMMENTDPWA K N multichannelΓ Λ σ /Γtotal

Γ3 /Γ

VALUE

DOCUMENT ID

0.15± 0.04

SARANTSEVTECN

19COMMENTDPWA K N multichannelΓ Σ (1385)π /Γtotal

Γ4 /Γ

VALUE

DOCUMENT ID

0.09± 0.04

SARANTSEV

TECN

19

COMMENTDPWA K N multichannelΓ Λ η /Γtotal

Γ5 /Γ

VALUE

DOCUMENT ID

0.01 to 0.10 OUR ESTIMATE
0.010± 0.005
0.06 ± 0.05

SARANTSEV
ZHANG

TECN

COMMENT

19 DPWA K N multichannel
13A DPWA Multichannel
1/(Γ1 Γ2 ) 2 /Γ1/(Γi Γf ) 2 /Γtotal in N K → Λ(1800) → Σ π
VALUE

DOCUMENT ID

TECNCOMMENT− 0.07± 0.02
ZHANG
13A DPWA Multichannel− 0.08± 0.05
GOPAL
77 DPWA K N multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 MARTIN− 0.74 or − 0.43
77 DPWA K N multichannel
0.24

https://pdg.lbl.gov

KIM

Page 371

DPWA K-matrix analysis

Created: 5/31/2024 10:12

Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)
1/(Γi Γf ) 2 /Γtotal in N K → Λ(1800) → Σ (1385)πVALUE

DOCUMENT ID− 0.09 ± 0.05
+ 0.056± 0.028

ZHANG
2 CAMERON

1/(Γ1 Γ4 ) 2 /ΓTECN

COMMENT

13A DPWA Multichannel
78 DPWA K − p → Σ (1385) π

1/1/(Γi Γf ) 2 /Γtotal in N K → Λ(1800) → N K ∗ (892), S=1/2, S-wave (Γ1 Γ7 ) 2 /ΓVALUE

DOCUMENT ID− 0.13± 0.02
− 0.17± 0.03

ZHANG
2 CAMERONTECNCOMMENT

13A DPWA Multichannel
78B DPWA K − p → N K ∗1/1/(Γi Γf ) 2 /Γtotal in N K → Λ(1800) → N K ∗ (892), S=3/2, D-wave (Γ1 Γ8 ) 2 /ΓVALUE

DOCUMENT ID− 0.13± 0.04

CAMERONTECNCOMMENT78B DPWA K − p → N K ∗Λ(1800) FOOTNOTES
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.

Λ(1800) REFERENCESSARANTSEV 19
EPJ A55 180
ZHANG
13A PR C88 035205
MANLEY02
PRL 88 012002
GOPAL80
Toronto Conf. 159
ALSTON-...
78
PR D18 182Also
PRL 38 1007
CAMERON78
NP B143 189
CAMERON
78B NP B146 327
GOPAL77
NP B119 362
MARTIN77
NP B127 349
Also
NP B126 266
Also
NP B126 285
LANGBEIN72
NP B47 477
KIM71
PRL 27 356
Also
Duke Conf. 161
Hyperon Resonances, 1970
BRICMAN70B PL 33B 511

https://pdg.lbl.gov

A.V. Sarantsev et al.
(BONN, PNPI)
H. Zhang et al.
(KSU)
D.M. Manley et al.
(BNL Crystal Ball Collab.)
G.P. Gopal(RHEL) IJP
M. Alston-Garnjost et al.
(LBL, MTHO+) IJP
M. Alston-Garnjost et al.
(LBL, MTHO+) IJP
W. Cameron et al.
(RHEL, LOIC) IJP
W. Cameron et al.
(RHEL, LOIC) IJP
G.P. Gopal et al.
(LOIC, RHEL) IJP
B.R. Martin, M.K. Pidcock, R.G. Moorhouse (LOUC+) IJP
B.R. Martin, M.K. Pidcock(LOUC)
B.R. Martin, M.K. Pidcock(LOUC) IJP
W. Langbein, F. Wagner(MPIM) IJP
J.K. Kim(HARV) IJP
J.K. Kim(HARV) IJP
C. Bricman, M. Ferro-Luzzi, J.P. Lagnaux

Page 4(CERN) IJP

Created: 5/31/2024 10:12