Photoproduction of the f(1)(1285) meson

CLAS Collaboration; R. Dickson; R. A. Schumacher; K. P. Adhikari; Z. Akbar; M. J. Amaryan; S. Anefalos Pereira; R. A. Badui; J. Ball; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. Biselli; S. Boiarinov; W. J. Briscoe; V. D. Burkert; T. Cao; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; T. Chetry; G. Ciullo; L. Colaneri; P. L. Cole; N. Compton; M. Contalbrigo; O. Cortes; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; M. Dugger; R. Dupre; A. El Alaoui; L. El Fassi; P. Eugenio; E. Fanchini; G. Fedotov; A. Filippi; J. A. Fleming; N. Gevorgyan; S. M. Hughes; D. Sokhan; I. Stankovic; D. P. Watts; N. Zachariou; L. Zana

doi:10.1103/PhysRevC.93.065202

Photoproduction of the f(1)(1285) meson

CLAS Collaboration, R. Dickson^*, R. A. Schumacher, K. P. Adhikari, Z. Akbar, M. J. Amaryan, S. Anefalos Pereira, R. A. Badui, J. Ball, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. Biselli, S. Boiarinov, W. J. Briscoe, V. D. Burkert, T. Cao, D. S. Carman, A. Celentano, S. ChandavarG. Charles, T. Chetry, G. Ciullo, L. Colaneri, P. L. Cole, N. Compton, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, C. Djalali, M. Dugger, R. Dupre, A. El Alaoui, L. El Fassi, P. Eugenio, E. Fanchini, G. Fedotov, A. Filippi, J. A. Fleming, N. Gevorgyan, S. M. Hughes, D. Sokhan, I. Stankovic, D. P. Watts, N. Zachariou, L. Zana

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

The f(1)(1285) meson withmass 1281.0 +/- 0.8MeV/c(2) and width 18.4 +/- 1.4MeV (full width at half maximum) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the eta pi(+)pi(-), K+(K) over bar (0) pi(-), and (K-K0)pi(+) decay channels from threshold up to a center-of-mass energy of 2.8 GeV. The mass, width, and an amplitude analysis of the eta pi(+)pi(-) final-state Dalitz distribution are consistent with the axial-vector J(P) = 1(+) f(1)(1285) identity, rather than the pseudoscalar 0(-) eta(1295). The production mechanism is more consistent with s-channel decay of a high-mass N* state and not with t-channel meson exchange. Decays to eta pi pi go dominantly via the intermediate a(0)(+/-) (980)pi(-/+) states, with the branching ratio Gamma [a(0)pi (no (K) over barK)]/Gamma[eta pi pi (all)] = 0.74 +/- 0.09. The branching ratios Gamma (K (K) over bar pi)/Gamma(eta pi pi) = 0.216 +/- 0.033 and Gamma (gamma rho(0))/Gamma(eta pi pi) = 0.047 +/- 0.018 were also obtained. The first is in agreement with previous data for the f(1)(1285), while the latter is lower than the world average.

Original language	English
Article number	065202
Number of pages	22
Journal	Physical Review C
Volume	93
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.93.065202
Publication status	Published - 9 Jun 2016

Keywords / Materials (for Non-textual outputs)

ETA-PI+PI-SYSTEM
CENTRAL PP INTERACTIONS
450 GEV/C
PSEUDOSCALAR RESONANCES
AXIAL-VECTOR
F(1) 1285
CLAS
CHANNEL
SPIN
COLLISIONS

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10.1103/PhysRevC.93.065202

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CLAS Collaboration, Dickson, R., Schumacher, R. A., Adhikari, K. P., Akbar, Z., Amaryan, M. J., Pereira, S. A., Badui, R. A., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A., Boiarinov, S., Briscoe, W. J., Burkert, V. D., Cao, T., Carman, D. S., Celentano, A., ... Zana, L. (2016). Photoproduction of the f(1)(1285) meson. Physical Review C, 93(6), Article 065202. https://doi.org/10.1103/PhysRevC.93.065202

@article{7fcaff768c854ef898ab09de1f0f235c,

title = "Photoproduction of the f(1)(1285) meson",

abstract = "The f(1)(1285) meson withmass 1281.0 +/- 0.8MeV/c(2) and width 18.4 +/- 1.4MeV (full width at half maximum) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the eta pi(+)pi(-), K+(K) over bar (0) pi(-), and (K-K0)pi(+) decay channels from threshold up to a center-of-mass energy of 2.8 GeV. The mass, width, and an amplitude analysis of the eta pi(+)pi(-) final-state Dalitz distribution are consistent with the axial-vector J(P) = 1(+) f(1)(1285) identity, rather than the pseudoscalar 0(-) eta(1295). The production mechanism is more consistent with s-channel decay of a high-mass N* state and not with t-channel meson exchange. Decays to eta pi pi go dominantly via the intermediate a(0)(+/-) (980)pi(-/+) states, with the branching ratio Gamma [a(0)pi (no (K) over barK)]/Gamma[eta pi pi (all)] = 0.74 +/- 0.09. The branching ratios Gamma (K (K) over bar pi)/Gamma(eta pi pi) = 0.216 +/- 0.033 and Gamma (gamma rho(0))/Gamma(eta pi pi) = 0.047 +/- 0.018 were also obtained. The first is in agreement with previous data for the f(1)(1285), while the latter is lower than the world average.",

keywords = "ETA-PI+PI-SYSTEM, CENTRAL PP INTERACTIONS, 450 GEV/C, PSEUDOSCALAR RESONANCES, AXIAL-VECTOR, F(1) 1285, CLAS, CHANNEL, SPIN, COLLISIONS",

author = "{CLAS Collaboration} and R. Dickson and Schumacher, {R. A.} and Adhikari, {K. P.} and Z. Akbar and Amaryan, {M. J.} and Pereira, {S. Anefalos} and Badui, {R. A.} and J. Ball and M. Battaglieri and V. Batourine and I. Bedlinskiy and A. Biselli and S. Boiarinov and Briscoe, {W. J.} and Burkert, {V. D.} and T. Cao and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and T. Chetry and G. Ciullo and L. Colaneri and Cole, {P. L.} and N. Compton and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and C. Djalali and M. Dugger and R. Dupre and {El Alaoui}, A. and {El Fassi}, L. and P. Eugenio and E. Fanchini and G. Fedotov and A. Filippi and Fleming, {J. A.} and N. Gevorgyan and Hughes, {S. M.} and D. Sokhan and I. Stankovic and Watts, {D. P.} and N. Zachariou and L. Zana",

year = "2016",

month = jun,

day = "9",

doi = "10.1103/PhysRevC.93.065202",

language = "English",

volume = "93",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

}

CLAS Collaboration, Dickson, R, Schumacher, RA, Adhikari, KP, Akbar, Z, Amaryan, MJ, Pereira, SA, Badui, RA, Ball, J, Battaglieri, M, Batourine, V, Bedlinskiy, I, Biselli, A, Boiarinov, S, Briscoe, WJ, Burkert, VD, Cao, T, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Chetry, T, Ciullo, G, Colaneri, L, Cole, PL, Compton, N, Contalbrigo, M, Cortes, O, Crede, V, D'Angelo, A, Dashyan, N, De Vita, R, De Sanctis, E, Deur, A, Djalali, C, Dugger, M, Dupre, R, El Alaoui, A, El Fassi, L, Eugenio, P, Fanchini, E, Fedotov, G, Filippi, A, Fleming, JA, Gevorgyan, N, Hughes, SM, Sokhan, D, Stankovic, I, Watts, DP, Zachariou, N & Zana, L 2016, 'Photoproduction of the f(1)(1285) meson', Physical Review C, vol. 93, no. 6, 065202. https://doi.org/10.1103/PhysRevC.93.065202

TY - JOUR

T1 - Photoproduction of the f(1)(1285) meson

AU - CLAS Collaboration

AU - Dickson, R.

AU - Schumacher, R. A.

AU - Adhikari, K. P.

AU - Akbar, Z.

AU - Amaryan, M. J.

AU - Pereira, S. Anefalos

AU - Badui, R. A.

AU - Ball, J.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Biselli, A.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Burkert, V. D.

AU - Cao, T.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Chetry, T.

AU - Ciullo, G.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Compton, N.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Djalali, C.

AU - Dugger, M.

AU - Dupre, R.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Eugenio, P.

AU - Fanchini, E.

AU - Fedotov, G.

AU - Filippi, A.

AU - Fleming, J. A.

AU - Gevorgyan, N.

AU - Hughes, S. M.

AU - Sokhan, D.

AU - Stankovic, I.

AU - Watts, D. P.

AU - Zachariou, N.

AU - Zana, L.

PY - 2016/6/9

Y1 - 2016/6/9

N2 - The f(1)(1285) meson withmass 1281.0 +/- 0.8MeV/c(2) and width 18.4 +/- 1.4MeV (full width at half maximum) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the eta pi(+)pi(-), K+(K) over bar (0) pi(-), and (K-K0)pi(+) decay channels from threshold up to a center-of-mass energy of 2.8 GeV. The mass, width, and an amplitude analysis of the eta pi(+)pi(-) final-state Dalitz distribution are consistent with the axial-vector J(P) = 1(+) f(1)(1285) identity, rather than the pseudoscalar 0(-) eta(1295). The production mechanism is more consistent with s-channel decay of a high-mass N* state and not with t-channel meson exchange. Decays to eta pi pi go dominantly via the intermediate a(0)(+/-) (980)pi(-/+) states, with the branching ratio Gamma [a(0)pi (no (K) over barK)]/Gamma[eta pi pi (all)] = 0.74 +/- 0.09. The branching ratios Gamma (K (K) over bar pi)/Gamma(eta pi pi) = 0.216 +/- 0.033 and Gamma (gamma rho(0))/Gamma(eta pi pi) = 0.047 +/- 0.018 were also obtained. The first is in agreement with previous data for the f(1)(1285), while the latter is lower than the world average.

AB - The f(1)(1285) meson withmass 1281.0 +/- 0.8MeV/c(2) and width 18.4 +/- 1.4MeV (full width at half maximum) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the eta pi(+)pi(-), K+(K) over bar (0) pi(-), and (K-K0)pi(+) decay channels from threshold up to a center-of-mass energy of 2.8 GeV. The mass, width, and an amplitude analysis of the eta pi(+)pi(-) final-state Dalitz distribution are consistent with the axial-vector J(P) = 1(+) f(1)(1285) identity, rather than the pseudoscalar 0(-) eta(1295). The production mechanism is more consistent with s-channel decay of a high-mass N* state and not with t-channel meson exchange. Decays to eta pi pi go dominantly via the intermediate a(0)(+/-) (980)pi(-/+) states, with the branching ratio Gamma [a(0)pi (no (K) over barK)]/Gamma[eta pi pi (all)] = 0.74 +/- 0.09. The branching ratios Gamma (K (K) over bar pi)/Gamma(eta pi pi) = 0.216 +/- 0.033 and Gamma (gamma rho(0))/Gamma(eta pi pi) = 0.047 +/- 0.018 were also obtained. The first is in agreement with previous data for the f(1)(1285), while the latter is lower than the world average.

KW - ETA-PI+PI-SYSTEM

KW - CENTRAL PP INTERACTIONS

KW - 450 GEV/C

KW - PSEUDOSCALAR RESONANCES

KW - AXIAL-VECTOR

KW - F(1) 1285

KW - CLAS

KW - CHANNEL

KW - SPIN

KW - COLLISIONS

U2 - 10.1103/PhysRevC.93.065202

DO - 10.1103/PhysRevC.93.065202

M3 - Article

SN - 2469-9985

VL - 93

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 065202

ER -

Photoproduction of the f(1)(1285) meson

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Keywords / Materials (for Non-textual outputs)

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