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

I (J P ) = 21 ( 21 − ) Status:

N(1535) 1/2−∗∗∗∗

Older and obsolete values are listed and referenced in the 2014 edition, Chinese Physics C38 070001 (2014).

N(1535) POLE POSITIONREAL PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1500 to 1520 (≈ 1510) OUR ESTIMATE
1504± 0ROENCHEN 22 DPWA Multichannel
1496± 4AFZAL
20 DPWA Multichannel
1500± 4SOKHOYAN 15A DPWA Multichannel
1 SVARC1509± 4± 214 L+P
πN → πN
1510± 50
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •
1496
HUNT
1499
ROENCHEN
1490
SHKLYAR1501± 4ANISOVICH
1521± 14
BATINIC
1502
ARNDT
1525
VRANA
1487
HOEHLER
1 Fit to the amplitudes of HOEHLER 79.

1915A
1312A
10060093

DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA π N → π N, η N
DPWA Multichannel
SPED π N → π N−2×IMAGINARY PARTVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

80 to 130 (≈ 110) OUR ESTIMATE
74± 1
ROENCHEN 22 DPWA Multichannel
125± 6AFZAL
20 DPWA Multichannel
128± 9SOKHOYAN 15A DPWA Multichannel
2 SVARC118± 9± 214 L+P
πN → πN
260± 80
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •
119
HUNT
104
ROENCHEN100SHKLYAR134± 11
ANISOVICH
190± 28
BATINIC
95
ARNDT102VRANA
2 Fit to the amplitudes of HOEHLER 79.

https://pdg.lbl.gov

Page 11915A
1312A
100600DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA π N → π N, η N
DPWA Multichannel

Created: 5/31/2024 10:12

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

N(1535) ELASTIC POLE RESIDUEMODULUS r
VALUE (MeV)

DOCUMENT ID

TECNCOMMENT

15 to 35 (≈ 25) OUR ESTIMATE
18± 1
ROENCHEN 22 DPWA Multichannel
29± 4
SOKHOYAN 15A DPWA Multichannel
3 SVARC22± 2± 0.4
14 L+PπN → πN
120± 40
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •22ROENCHEN
15SHKLYAR
31± 4
ANISOVICH
68BATINIC
16ARNDT3 Fit to the amplitudes of HOEHLER 79.

15A1312A
1006

DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA π N → π N, η N

PHASE θVALUE (◦ )DOCUMENT ID

TECNCOMMENT− 40 to 0 (≈ − 20) OUR ESTIMATE− 37± 2
ROENCHEN 22 DPWA Multichannel− 20± 10SOKHOYAN 15A DPWA Multichannel
4 SVARC− 5± 5± 314 L+PπN → πN+ 15± 45
CUTKOSKY 80 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •− 46
ROENCHEN− 51
SHKLYAR− 29± 5ANISOVICH
12BATINIC
− 16
ARNDT
4 Fit to the amplitudes of HOEHLER 79.

15A
1312A
1006

DPWA Multichannel
DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA π N → π N, η N

N(1535) INELASTIC POLE RESIDUE
The “normalized residue” is the residue divided by Γpole /2.

Normalized residue in N π → N(1535) → N η
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.50± 0.02
118 ± 1ROENCHEN 22 DPWA Multichannel
0.43± 0.03
− 76 ± 5
ANISOVICH
12A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.51112ROENCHEN

15A DPWA Multichannel

Normalized residue in N π → N(1535) → Λ K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT

0.26± 0.01
− 67 ± 2
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.0532

https://pdg.lbl.gov

ROENCHENPage 215A DPWA 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 π → N(1535) → Σ K
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT0.28± 0.01
92 ± 2
ROENCHEN 22 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.05− 69

ROENCHEN

15A DPWA Multichannel

Normalized residue in N π → N(1535) → ∆ π, D-wave
MODULUSPHASE (◦ )DOCUMENT ID

TECNCOMMENT0.11± 0.02
160 ± 20SOKHOYAN 15A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.12± 0.03

145 ± 17

ANISOVICH

12A DPWA Multichannel

Normalized residue in N π → N(1535) → N σ
MODULUSPHASE (◦ )DOCUMENT ID

0.16± 0.07

25 ± 40SOKHOYAN

TECNCOMMENT

15A DPWA Multichannel

Normalized residue in N π → N(1535) → N(1440)πMODULUSPHASE (◦ )DOCUMENT ID

0.21± 0.14

− 45 ± 50

SOKHOYAN

TECNCOMMENT

15A DPWA Multichannel

N(1535) BREIT-WIGNER MASSVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

1515 to 1545 (≈ 1530) OUR ESTIMATE
5 HUNT
1525 ± 219 DPWA Multichannel
1528 ± 6
KASHEVAROV 17 DPWA γ p → η p, η ′ p
1517 ± 4
SOKHOYAN 15A DPWA Multichannel
5 SHKLYAR
1526 ± 213 DPWA Multichannel
5 ARNDT
1547.0± 0.7
06 DPWA π N → π N, η N
1550 ± 40
CUTKOSKY 80 IPWA π N → π N
1526 ± 7
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •1519 ± 51538 ± 1
1553 ± 81546.7± 2.21526 ± 2
1530 ± 101522 ± 111542 ± 31532 ± 55 Statistical error only.

ANISOVICH
5 SHRESTHA

12A
12A
BATINIC
10ARNDT
04
PENNER
02CBAI01B
THOMPSON 01
VRANA00
ARMSTRONG 99B

DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA π N → π N, η N
DPWA Multichannel
BES
J/ψ → p p η
CLAS γ ∗ p → p η
DPWA Multichannel
DPWA γ ∗ p → p η

N(1535) BREIT-WIGNER WIDTHVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

125 to 175 (≈ 150) OUR ESTIMATE
6 HUNT147 ± 519 DPWA Multichannel
163 ± 25KASHEVAROV 17 DPWA γ p → η p, η ′ p
120 ± 10SOKHOYAN 15A DPWA Multichannel

https://pdg.lbl.gov

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

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

6 SHKLYAR
131 ± 1213 DPWA Multichannel
6188.4± 3.8
ARNDT
06 DPWA π N → π N, η N
240 ± 80
CUTKOSKY 80 IPWA π N → π N
120 ± 20
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •128 ± 14141 ± 4182 ± 25
129 ± 895 ± 25
143 ± 18112 ± 19
154 ± 20
6 Statistical error only.

ANISOVICH
6 SHRESTHA

12A
12A
BATINIC
10PENNER
02CBAI01B
THOMPSON 01
VRANA00
ARMSTRONG 99B

DPWA Multichannel
DPWA Multichannel
DPWA π N → N π, N η
DPWA Multichannel
BES
J/ψ → p p η
CLAS γ ∗ p → p η
DPWA Multichannel
DPWA γ ∗ p → p η

N(1535) DECAY MODES
The following branching fractions are our estimates, not fits or averages.

Γ1
Γ2
Γ3
Γ4
Γ5
Γ6Γ7
Γ8
Γ9Γ10Γ11ModeFraction (Γi /Γ)NπNηNππ∆(1232)π , D-waveNρN ρ , S=1/2 , S-wave
N ρ , S=3/2 , D-wave
NσN(1440)πp γ , helicity=1/2n γ , helicity=1/2

32–52 %
30–55 %
4–31 %
1–4 %
2–17 %
2–16 %<1 %2–10 %
5–12 %
0.15–0.30 %
0.01–0.25 %N(1535) BRANCHING RATIOSΓ N π /Γtotal
VALUE (%)

Γ1 /ΓDOCUMENT ID

TECNCOMMENT

32–52 % OUR ESTIMATE
7 HUNT
42 ± 219 DPWA Multichannel
52 ± 5SOKHOYAN 15A DPWA Multichannel
7 SHKLYAR
35 ± 313 DPWA Multichannel
7 ARNDT35.5± 0.206 DPWA π N → π N, η N50 ± 10
CUTKOSKY 80 IPWA π N → π N
38 ± 4
HOEHLER
79 IPWA π N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •54 ± 537 ± 146 ± 7https://pdg.lbl.gov

ANISOVICH
7 SHRESTHABATINICPage 4

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

Created: 5/31/2024 10:12

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

36 ± 135 ± 87 Statistical error only.

PENNERVRANA

02C DPWA Multichannel00 DPWA MultichannelΓ N η /Γtotal

Γ2 /ΓVALUE (%)

DOCUMENT ID

TECNCOMMENT

30–55 % OUR ESTIMATE
41± 4
MUELLER
20 DPWA Multichannel
8 HUNT43± 3
19 DPWA Multichannel
9 KASHEVAROV 17 DPWA γ p → η p, η ′ p
41± 4858± 4
SHKLYAR
13 DPWA Multichannel
33± 5
ANISOVICH
12A DPWA Multichannel
53± 1
PENNER
02C DPWA Multichannel
51± 5
VRANA
00 DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •8 SHRESTHA
41± 2
12A DPWA Multichannel
50± 7
BATINIC
8 Statistical error only.
−1/2 .
9 Assuming A
1/2 = 0.115 GeV

10DPWA π N → N π, N ηΓ N η /Γ N π

Γ2 /Γ1VALUEDOCUMENT ID

TECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •0.95± 0.03

AZNAURYAN 09

CLASπ, η electroproductionΓ ∆(1232)π , D-wave /Γtotal

Γ4 /Γ

VALUE (%)

DOCUMENT ID

TECNCOMMENT

1–4 % OUR ESTIMATE
3 ±1
ADAMCZEW... 20 DPWA Multichannel
10 HUNT<1.119 DPWA Multichannel
2.5± 1.5
SOKHOYAN 15A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •2.5± 1.5
1.8± 0.81 ±1
10 Statistical error only.

ANISOVICH
10 SHRESTHAVRANA

12A DPWA Multichannel
12A DPWA Multichannel
00 DPWA MultichannelΓ N ρ , S=1/2 , S-wave /Γtotal
VALUE (%)

2–16 % OUR ESTIMATE
2.7± 0.6
14 ± 211 Statistical error only.

https://pdg.lbl.gov

Γ6 /Γ
DOCUMENT ID

ADAMCZEW... 20
11 HUNT
19Page 5TECNCOMMENTDPWA Multichannel
DPWA Multichannel

Created: 5/31/2024 10:12Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

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

Γ7 /ΓDOCUMENT ID<1 % OUR ESTIMATE
0.5± 0.5<0.3
12 Statistical error only.

TECN

ADAMCZEW... 20
12 HUNT
19COMMENTDPWA Multichannel
DPWA MultichannelΓ N σ /Γtotal

Γ8 /Γ

VALUE (%)

DOCUMENT ID

TECNCOMMENT

2–10 % OUR ESTIMATE
13 HUNT<119 DPWA Multichannel
6 ±4
SOKHOYAN 15A DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •13 SHRESTHA
1.5± 0.5
12A DPWA Multichannel
2 ±1
13 Statistical error only.

VRANA00

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

Γ9 /ΓDOCUMENT ID

TECNCOMMENT

5–12 % OUR ESTIMATE
14 HUNT< 0.0119 DPWA Multichannel
12 ± 8SOKHOYAN 15A DPWA Multichannel
14 STAROSTIN 03
8 ±2π − p → n 3π 0• • • We do not use the following data for averages, fits, limits, etc. • • •14 SHRESTHA< 112A DPWA Multichannel
10 ± 9VRANA00 DPWA Multichannel
14 This value is an estimate made using simplest assumptions.

N(1535) PHOTON DECAY AMPLITUDES AT THE POLE
N(1535) → p γ , helicity-1/2 amplitude A1/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID

TECNCOMMENT0.084± 0.002− 12 ± 2
ROENCHEN 22 DPWA Multichannel
0.093± 0.009
8±4
ANISOVICH
17D DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •0.114± 0.008
0.106
0.114± 0.008

10 ± 55.2
10 ± 5ANISOVICH
ROENCHENSOKHOYAN

15A DPWA Multichannel
15A DPWA Multichannel15A DPWA Multichannel

N(1535) → n γ , helicity-1/2 amplitude A1/2
MODULUS (GeV−1/2 )PHASE (◦ )DOCUMENT ID

TECNCOMMENT− 0.088± 0.004
5±4
ANISOVICH
17D DPWA Multichannel• • • We do not use the following data for averages, fits, limits, etc. • • •− 0.095± 0.006

8±5

https://pdg.lbl.gov

ANISOVICHPage 6

15A DPWA Multichannel

Created: 5/31/2024 10:12

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

N(1535) BREIT-WIGNER PHOTON DECAY AMPLITUDESN(1535) → p γ , helicity-1/2 amplitude A1/2
VALUE (GeV−1/2 )DOCUMENT ID

TECNCOMMENT

0.090 to 0.120 (≈ 0.105) OUR ESTIMATE
15 HUNT
0.107± 0.003
19 DPWA Multichannel
0.101± 0.007
SOKHOYAN 15A DPWA Multichannel
15 SHKLYAR
0.091± 0.004
13 DPWA Multichannel
15 WORKMAN
0.128± 0.004
12A DPWA γ N → N π
15 DUGGER
0.091± 0.002
07 DPWA γ N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •0.105± 0.010
0.059± 0.003
0.066
0.09015 Statistical error only.

ANISOVICH
15 SHRESTHADRECHSELPENNER

12A
12A
0702D

DPWA Multichannel
DPWA Multichannel
DPWA γ N → π N
DPWA Multichannel

N(1535) → n γ , helicity-1/2 amplitude A1/2
VALUE (GeV−1/2 )DOCUMENT ID

TECNCOMMENT− 0.095 to − 0.055 (≈ − 0.075) OUR ESTIMATE
16 HUNT− 0.055± 0.006
19 DPWA Multichannel− 0.081± 0.006
ANISOVICH
17E DPWA Multichannel
16 CHEN− 0.058± 0.006
12A DPWA γ N → π N• • • We do not use the following data for averages, fits, limits, etc. • • •− 0.093± 0.011− 0.049± 0.003− 0.051− 0.024
16 Statistical error only.

ANISOVICH
16 SHRESTHADRECHSELPENNER

13B
12A
0702D

DPWA Multichannel
DPWA Multichannel
DPWA γ N → π N
DPWA Multichannel

N(1535) → N γ, ratio An1/2 /Ap1/2
VALUE (GeV−1/2 )DOCUMENT ID

TECN• • • We do not use the following data for averages, fits, limits, etc. • • •− 0.84± 0.15

MUKHOPAD... 95B IPWA

N(1535) REFERENCES
For early references, see Physics Letters 111B 1 (1982).
ROENCHEN
22ADAMCZEW... 20
AFZAL
20MUELLER
20
HUNT
19
ANISOVICH
17D
ANISOVICH
17E
KASHEVAROV 17
ANISOVICH
15A
ROENCHEN15ASOKHOYAN
15A
PDG
14
SVARC
14

EPJ A58 229
PR C102 024001
PRL 125 152002
PL B803 135323
PR C99 055205
PR C95 035211
PR C96 055202
PRL 118 212001
EPJ A51 72
EPJ A51 70
EPJ A51 95
CP C38 070001
PR C89 045205

https://pdg.lbl.gov

D. Roenchen et al.
J. Adamczewski-Musch et al.
F. Afzal et al.
J. Mueller et al.
B.C. Hunt, D.M. Manley
A.V. Anisovich et al.
A.V. Anisovich et al.
V.L. Kashevarov et al.
A.V. Anisovich et al.
D. Roenchen et al.
V. Sokhoyan et al.
K. Olive et al.
A. Svarc et al.

Page 7(JULI, GWU, BONN+)(HADES Collab.)(CBELSA/TAPS Collab.)(CBELSA/TAPS Collab.)(BONN, PNPI, JLAB+)(A2/MAMI Collab.)(CBELSA/TAPS Collab.)(PDG Collab.)(RBI Zagreb, UNI Tuzla)

Created: 5/31/2024 10:12

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

ANISOVICH
13B
SHKLYAR
13
ANISOVICH
12ACHEN
12A
SHRESTHA
12A
WORKMAN
12A
BATINIC10
AZNAURYAN 09
DRECHSEL
07
DUGGER
07
ARNDT
06
ARNDT
04
STAROSTIN
03
PENNER
02C
PENNER
02D
BAI
01B
THOMPSON 01
VRANA
00
ARMSTRONG 99B
MUKHOPAD... 95B
HOEHLER
93
CUTKOSKY80
Also
HOEHLER79
Also

EPJ A49 67
PR C87 015201
EPJ A48 15
PR C86 015206
PR C86 055203
PR C86 015202
PR C82 038203
PR C80 055203
EPJ A34 69
PR C76 025211
PR C74 045205
PR C69 035213
PR C67 068201
PR C66 055211
PR C66 055212
PL B510 75
PRL 86 1702
PRPL 328 181
PR D60 052004
PL B364 1
π N Newsletter 9 1
Toronto Conf. 19
PR D20 2839
PDAT 12-1
Toronto Conf. 3

https://pdg.lbl.gov

A.V. Anisovich et al.
V. Shklyar, H. Lenske, U. Mosel(GIES)
A.V. Anisovich et al.
(BONN, PNPI)W. Chen et al.
(DUKE, GWU, MSST, ITEP+)
M. Shrestha, D.M. Manley(KSU)
R. Workman et al.
(GWU)
M. Batinic et al.
(ZAGR)
I.G. Aznauryan et al.
(JLab CLAS Collab.)
D. Drechsel, S.S. Kamalov, L. Tiator(MAINZ, JINR)
M. Dugger et al.
(JLab CLAS Collab.)
R.A. Arndt et al.
(GWU)R.A. Arndt et al.
(GWU, TRIU)
A. Starostin et al.
(BNL Crystal Ball Collab.)
G. Penner, U. Mosel(GIES)
G. Penner, U. Mosel(GIES)
J.Z. Bai et al.
(BES Collab.)
R. Thompson et al.
(JLab CLAS Collab.)
T.P. Vrana, S.A. Dytman, T.-S.H. Lee(PITT, ANL)
C.S. Armstrong et al.
N.C. Mukhopadhyay, J.F. Zhang, M. Benmerrouche
G. Hohler(KARL)
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

Page 8Created: 5/31/2024 10:12