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

I (J P ) = 21 ( 21 − ) Status:

N(1895) 1/2−∗∗∗∗

was N(2090)
Before our 2012 Review, this state appeared in our Listings as theN(2090). Any structure in the S11 wave above 1800 MeV is listed
here. A few early results that are now obsolete have been omitted.

N(1895) POLE POSITIONREAL PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT1890 to 1930 (≈ 1910) OUR ESTIMATE
1907± 10AFZAL
20 DPWA Multichannel
1895± 15ANISOVICH
17A DPWA Multichannel1
1906± 17
ANISOVICH
17A L+Pγ p, π − p → K Λ
2
1917± 19 ± 1
SVARC
14 L+PπN → πN• • • We do not use the following data for averages, fits, limits, etc. • • •
1956
HUNT
1907± 10ANISOVICH
1907± 10SOKHOYAN
1900± 15ANISOVICH
1797± 26
BATINIC
1795
VRANA
2150± 70
CUTKOSKY
1 Statistical error only.
2 Fit to the amplitudes of HOEHLER 79.

1917C
15A
12A
100080DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA Multichannel
IPWA π N → π N−2×IMAGINARY PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT80 to 140 (≈ 110) OUR ESTIMATE
40100 +AFZAL
20 DPWA Multichannel− 10132± 30
ANISOVICH
17A DPWA Multichannel
1 ANISOVICH
100± 1017A L+P
γ p, π − p → K Λ
1,2101± 36 ± 1
SVARC
14 L+P
πN → πN• • • We do not use the following data for averages, fits, limits, etc. • • •449

HUNT+
40100 − 10ANISOVICH
40100 +SOKHOYAN− 153090 +ANISOVICH− 15420± 45
BATINIC220VRANA350± 100
CUTKOSKY
1 Statistical error only.
2 Fit to the amplitudes of HOEHLER 79.

https://pdg.lbl.gov

Page 119DPWA Multichannel

17C DPWA Multichannel
15A DPWA Multichannel
12A DPWA Multichannel
100080DPWA π N → N π, N η
DPWA Multichannel
IPWA π N → π N

Created: 5/31/2024 10:12

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

N(1895) ELASTIC POLE RESIDUEMODULUS r
VALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1 to 5 (≈ 3) OUR ESTIMATE
3 ± 2
SOKHOYAN 15A DPWA Multichannel
1 SVARC3.1± 1.4
14 L+P
πN → πN• • • We do not use the following data for averages, fits, limits, etc. • • •1 ± 1
ANISOVICH
60BATINIC
40 ± 20
CUTKOSKY
1 Fit to the amplitudes of HOEHLER 79.

12A DPWA Multichannel
10 DPWA π N → N π, N η
80 IPWA π N → π N

PHASE θVALUE (◦ )DOCUMENT ID

TECNCOMMENT

125± 45SOKHOYAN 15A DPWA Multichannel
1 SVARC− 107± 23 ± 214 L+P
πN → πN0± 90
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •− 164
BATINIC
1 Fit to the amplitudes of HOEHLER 79.

10DPWA π N → N π, N ηN(1895) INELASTIC POLE RESIDUE
The “normalized residue” is the residue divided by Γpole /2.

Normalized residue in N π → N(1895) → Λ K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.09± 0.03
8 ± 30
ANISOVICH
17A DPWA Multichannel
1 ANISOVICH
0.06± 0.02
87 ± 27
17A L+P
γ p, π − p → K Λ• • • We do not use the following data for averages, fits, limits, etc. • • •0.05± 0.02
− 90 ± 301 Statistical error only.

ANISOVICH

12A DPWA Multichannel

Normalized residue in N π → N(1895) → Σ K
MODULUSPHASE (◦ )DOCUMENT ID

0.06± 0.02

40 ± 30

ANISOVICHTECNCOMMENT

12A DPWA Multichannel

Normalized residue in N π → N(1895) → ∆(1232)π
MODULUSPHASE (◦ )DOCUMENT ID

0.05± 0.025− 100 ± 45

SOKHOYAN

TECNCOMMENT

15A DPWA Multichannel

Normalized residue in N π → N(1895) → N(1440)πMODULUSPHASE (◦ )DOCUMENT ID

0.05± 0.025− 100 ± 45

SOKHOYAN

https://pdg.lbl.gov

Page 2TECNCOMMENT15A DPWA Multichannel

Created: 5/31/2024 10:12

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

N(1895) BREIT-WIGNER MASSVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1870 to 1920 (≈ 1895) OUR ESTIMATE
1 HUNT
2000± 29
19 DPWA Multichannel+91890 − 23
KASHEVAROV 17 DPWA γ p → η p, η ′ p
1905± 12SOKHOYAN 15A DPWA Multichannel
1880± 20
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •1895± 151910± 151812± 251822± 432180± 80
1 Statistical error only.

ANISOVICH
1 SHRESTHABATINICVRANA
CUTKOSKY

12A12A
100080DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N ηDPWA Multichannel
IPWA π N → π N

N(1895) BREIT-WIGNER WIDTHVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

80 to 200 (≈ 120) OUR ESTIMATE
1 HUNT466± 72
19 DPWA Multichannel
150± 57
KASHEVAROV 17 DPWA γ p → η p, η ′ p
30100 +SOKHOYAN 15A DPWA Multichannel− 1095± 30
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •3090 +− 15ANISOVICH
1 SHRESTHA

502± 47405± 40248± 185
350± 100
1 Statistical error only.

BATINICVRANA
CUTKOSKY

12A DPWA Multichannel
12A
100080DPWA Multichannel
DPWA π N → N π, N η
DPWA Multichannel
IPWA π N → π N

N(1895) DECAY MODES

Γ1
Γ2
Γ3
Γ4
Γ5Γ6Γ7Γ8ModeFraction (Γi /Γ)NπNη
N η′Nω
ΛKΣKNππ∆(1232)π , D-wave

2–18 %
15–45 %

https://pdg.lbl.gov

10–40 %
16–40 %
3–23 %
6–20 %
17–74 %
3–11 %

Page 3Created: 5/31/2024 10:12

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

Γ9Γ10Γ11Γ12Γ13Γ14Γ15Γ16Nρ
N ρ , S=1/2, S-wave
N ρ , S=3/2, D-wave
NσN(1440)πΛ K ∗ (892)p γ , helicity=1/2
n γ , helicity=1/2

14–50 %
<18 %14–32 %
<13 %
2–12 %
4–9 %0.01–0.06 %0.003–0.05 %N(1895) BRANCHING RATIOSΓ N π /Γtotal
VALUE (%)

Γ1 /ΓDOCUMENT ID

TECNCOMMENT

2–18 % OUR ESTIMATE
1 HUNT
8 ±419 DPWA Multichannel
2.5± 1.5
SOKHOYAN 15A DPWA Multichannel
9 ±5
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •2 ±1
17 ± 232 ± 617 ± 318 ± 8
1 Statistical error only.

ANISOVICH
1 SHRESTHABATINICVRANA
CUTKOSKY

12A
12A
100080DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA Multichannel
IPWA π N → π N

Γ N η /Γtotal
VALUE (%)

Γ2 /ΓDOCUMENT ID

TECNCOMMENT

15–45 % OUR ESTIMATE
10± 5
MUELLER20 DPWA Multichannel
1 HUNT
37± 919 DPWA Multichannel
10± 5
ANISOVICH
17C DPWA Multichannel
2 KASHEVAROV 17 DPWA γ p → η p, η ′ p
20± 6• • • We do not use the following data for averages, fits, limits, etc. • • •21± 6
ANISOVICH
1 SHRESTHA
40± 422± 10
BATINIC41± 4VRANA
1 Statistical error only.
2 Assuming A−1/2 .
1/2 = − 0.030 GeV

12A
12A
1000

DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA MultichannelΓ N η ′ /Γtotal
VALUE (%)

Γ3 /ΓDOCUMENT ID

TECNCOMMENT

10–40 % OUR ESTIMATE
13± 5
ANISOVICH
17C DPWA Multichannel
1 KASHEVAROV 17 DPWA γ p → η p, η ′ p
38± 20−1/2 .
1 Assuming A
1/2 = − 0.030 GeV

https://pdg.lbl.gov

Page 4Created: 5/31/2024 10:12

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

Γ N ω /Γtotal

Γ4 /Γ

VALUE (%)

DOCUMENT ID

16–40 % OUR ESTIMATE
28± 12DENISENKO

TECN

16COMMENTDPWA MultichannelΓ Λ K /Γtotal
VALUE (%)

Γ5 /ΓDOCUMENT ID

TECNCOMMENT

3–23 % OUR ESTIMATE
1 HUNT
7 ±419 DPWA Multichannel
18 ± 5ANISOVICH
12A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
1.8± 0.8
12A DPWA Multichannel
1 Statistical error only.

Γ Σ K /Γtotal

Γ6 /Γ

VALUE (%)

DOCUMENT ID

6–20 % OUR ESTIMATE
13± 7

ANISOVICHTECNCOMMENT

12A DPWA MultichannelΓ ∆(1232)π , D-wave /Γtotal
VALUE (%)

Γ8 /ΓDOCUMENT ID

TECNCOMMENT

3–11 % OUR ESTIMATE
1 HUNT<1019 DPWA Multichannel
7± 4
SOKHOYAN 15A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
7± 3
12A DPWA Multichannel
1± 1
1 Statistical error only.

VRANA00

DPWA MultichannelΓ N ρ , S=1/2, S-wave /Γtotal
VALUE (%)

Γ10 /Γ
DOCUMENT ID

TECNCOMMENT<18 % OUR ESTIMATE
1 HUNT<1819 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA< 212A DPWA Multichannel
36± 1
1 Statistical error only.

VRANA00

DPWA MultichannelΓ N ρ , S=3/2, D-wave /Γtotal
VALUE (%)

Γ11 /Γ
DOCUMENT ID

TECNCOMMENT

14–32 % OUR ESTIMATE
1 HUNT23± 9
19 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
9± 3
12A DPWA Multichannel
1± 1
1 Statistical error only.

VRANA

https://pdg.lbl.gov

Page 500

DPWA Multichannel

Created: 5/31/2024 10:12

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

Γ N σ /ΓtotalΓ12 /Γ

VALUE (%)

DOCUMENT ID

TECNCOMMENT<13 % OUR ESTIMATE
1 HUNT<1319 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA< 212A DPWA Multichannel
2± 1
1 Statistical error only.

VRANA00

DPWA MultichannelΓ N(1440)π /Γtotal
VALUE (%)

Γ13 /Γ
DOCUMENT ID

TECNCOMMENT

2–12 % OUR ESTIMATE
1 HUNT
7 ±5
19 DPWA Multichannel
2.5± 1.5
SOKHOYAN 15A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
24 ± 4
12A DPWA Multichannel
2 ±1
1 Statistical error only.

VRANA00

DPWA MultichannelΓ Λ K ∗ (892) /Γtotal

Γ14 /ΓVALUE (%)

DOCUMENT ID

4–9 % OUR ESTIMATE
6.3± 2.5

ANISOVICHTECNCOMMENT

17B DPWA Multichannel

N(1895) PHOTON DECAY AMPLITUDES AT THE POLE
N(1895) → p γ , helicity-1/2 amplitude A1/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID

TECNCOMMENT− 0.015± 0.006− 35 ± 35
ANISOVICH
17C DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.015± 0.006

145 ± 35SOKHOYAN

15A DPWA Multichannel

N(1895) → n γ , helicity-1/2 amplitude A1/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID− 0.015± 0.010

60 ± 25

ANISOVICHTECNCOMMENT

17E DPWA Multichannel

N(1895) BREIT-WIGNER PHOTON DECAY AMPLITUDESN(1895) → p γ , helicity-1/2 amplitude A1/2
VALUE (GeV−1/2 )DOCUMENT ID

TECNCOMMENT

1 HUNT
0.017± 0.005
19 DPWA Multichannel− 0.016± 0.006
SOKHOYAN 15A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •1 SHRESTHA
0.012± 0.006
12A DPWA Multichannel
1 Statistical error only.

https://pdg.lbl.gov

Page 6Created: 5/31/2024 10:12

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

N(1895) → n γ , helicity-1/2 amplitude A1/2
VALUE (GeV−1/2 )DOCUMENT ID

TECNCOMMENT

1 HUNT

0.002± 0.013
19 DPWA Multichannel− 0.014± 0.010
ANISOVICH
17E DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.013± 0.006
0.003± 0.007
1 Statistical error only.

ANISOVICH
1 SHRESTHA

13B DPWA Multichannel
12A DPWA Multichannel

N(1895) REFERENCES
AFZAL
20MUELLER
20
HUNT
19
ANISOVICH
17A
ANISOVICH
17B
ANISOVICH
17C
ANISOVICH
17E
KASHEVAROV 17
DENISENKO
16SOKHOYAN
15A
SVARC
14
ANISOVICH
13B
ANISOVICH
12A
SHRESTHA
12A
BATINIC10VRANA00
CUTKOSKY80
Also
HOEHLER
79AlsoPRL 125 152002
PL B803 135323
PR C99 055205
PRL 119 062004
PL B771 142PL B772 247
PR C96 055202
PRL 118 212001
PL B755 97
EPJ A51 95
PR C89 045205
EPJ A49 67
EPJ A48 15
PR C86 055203
PR C82 038203
PRPL 328 181
Toronto Conf. 19
PR D20 2839
PDAT 12-1
Toronto Conf. 3

https://pdg.lbl.gov

F. Afzal et al.
(CBELSA/TAPS Collab.)
J. Mueller et al.
(CBELSA/TAPS Collab.)
B.C. Hunt, D.M. Manley
A.V. Anisovich et al.
A.V. Anisovich et al.
A.V. Anisovich et al.
A.V. Anisovich et al.
(BONN, PNPI, JLAB+)
V.L. Kashevarov et al.
(A2/MAMI Collab.)
I. Denisenko et al.
V. Sokhoyan et al.
(CBELSA/TAPS Collab.)
A. Svarc et al.
(RBI Zagreb, UNI Tuzla)
A.V. Anisovich et al.
A.V. Anisovich et al.
(BONN, PNPI)
M. Shrestha, D.M. Manley(KSU)
M. Batinic et al.
(ZAGR)
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)
G. Hohler et al.
(KARLT) IJP
R. Koch(KARLT) IJP

Page 7Created: 5/31/2024 10:12