Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory

P. Roy; Z. Akbar; V. Crede; A. V. Anisovich; I. Denisenko; E. Klempt; V. A. Nikonov; A. V. Sarantsev; K. P. Adhikari; S. Adhikari; S. Anefalos Pereira; I. Balossino; M. Bashkanov; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; S. Boiarinov; W. J. Briscoe; J. Brock; V. D. Burkert; C. Carlin; D. S. Carman; A. Celentano; G. Charles; T. Chetry; G. Ciullo; B. A. Clary; P. L. Cole; M. Contalbrigo; A. D'Angelo; N. Dashyan; R. De Vita; A. Deur; C. Djalali; M. Dugger; R. Dupre; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; A. Filippi; A. Fradi; G. Gavalian; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; D. P. Watts; The CLAS Collaboration

doi:10.1103/PhysRevC.97.055202

Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory

P. Roy, Z. Akbar, V. Crede^*, A. V. Anisovich, I. Denisenko, E. Klempt, V. A. Nikonov, A. V. Sarantsev, K. P. Adhikari, S. Adhikari, S. Anefalos Pereira, I. Balossino, M. Bashkanov, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. S. Biselli, S. Boiarinov, W. J. Briscoe, J. BrockV. D. Burkert, C. Carlin, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, B. A. Clary, P. L. Cole, M. Contalbrigo, A. D'Angelo, N. Dashyan, R. De Vita, A. Deur, C. Djalali, M. Dugger, R. Dupre, A. El Alaoui, L. El Fassi, L. Elouadrhiri, P. Eugenio, G. Fedotov, S. Fegan, A. Filippi, A. Fradi, G. Gavalian, N. Gevorgyan, G. P. Gilfoyle, K. L. Giovanetti, D. P. Watts, The CLAS Collaboration

^*Corresponding author for this work

Physics

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

Abstract

The photoproduction of ω mesons off the proton has been studied in the reaction γp→pω using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target in Hall B at the Thomas Jefferson National Accelerator Facility. For the first time, the target asymmetry T has been measured in photoproduction from the decay ω→π+π-π0, using a transversely polarized target with energies ranging from just above the reaction threshold up to 2.8 GeV. Significant nonzero values are observed for these asymmetries, reaching about 30-40% in the third-resonance region. New measurements for the photon-beam asymmetry Σ are also presented, which agree well with previous CLAS results and extend the world database up to 2.1 GeV. These data and additional ω photoproduction observables from CLAS were included in a partial-wave analysis within the Bonn-Gatchina framework. Significant contributions from s-channel resonance production were found in addition to t-channel exchange processes.

Original language	English
Article number	055202
Journal	Physical Review C
Volume	97
Issue number	5
Early online date	4 May 2018
DOIs	https://doi.org/10.1103/PhysRevC.97.055202
Publication status	Published - 4 May 2018

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PhysRevC.97.055202
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Roy, P., Akbar, Z., Crede, V., Anisovich, A. V., Denisenko, I., Klempt, E., Nikonov, V. A., Sarantsev, A. V., Adhikari, K. P., Adhikari, S., Anefalos Pereira, S., Balossino, I., Bashkanov, M., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Boiarinov, S., Briscoe, W. J., ... The CLAS Collaboration (2018). Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory. Physical Review C, 97(5), Article 055202. https://doi.org/10.1103/PhysRevC.97.055202

@article{ebbd4570693f44c7a58e26fa19b91de0,

title = "Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory",

abstract = "The photoproduction of ω mesons off the proton has been studied in the reaction γp→pω using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target in Hall B at the Thomas Jefferson National Accelerator Facility. For the first time, the target asymmetry T has been measured in photoproduction from the decay ω→π+π-π0, using a transversely polarized target with energies ranging from just above the reaction threshold up to 2.8 GeV. Significant nonzero values are observed for these asymmetries, reaching about 30-40% in the third-resonance region. New measurements for the photon-beam asymmetry Σ are also presented, which agree well with previous CLAS results and extend the world database up to 2.1 GeV. These data and additional ω photoproduction observables from CLAS were included in a partial-wave analysis within the Bonn-Gatchina framework. Significant contributions from s-channel resonance production were found in addition to t-channel exchange processes.",

author = "P. Roy and Z. Akbar and V. Crede and Anisovich, {A. V.} and I. Denisenko and E. Klempt and Nikonov, {V. A.} and Sarantsev, {A. V.} and Adhikari, {K. P.} and S. Adhikari and {Anefalos Pereira}, S. and I. Balossino and M. Bashkanov and M. Battaglieri and V. Batourine and I. Bedlinskiy and Biselli, {A. S.} and S. Boiarinov and Briscoe, {W. J.} and J. Brock and Burkert, {V. D.} and C. Carlin and Carman, {D. S.} and A. Celentano and G. Charles and T. Chetry and G. Ciullo and Clary, {B. A.} and Cole, {P. L.} and M. Contalbrigo and A. D'Angelo and N. Dashyan and {De Vita}, R. and A. Deur and C. Djalali and M. Dugger and R. Dupre and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and G. Fedotov and S. Fegan and A. Filippi and A. Fradi and G. Gavalian and N. Gevorgyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Watts, {D. P.} and {The CLAS Collaboration}",

note = "{\textcopyright}2018 American Physical Society",

year = "2018",

month = may,

day = "4",

doi = "10.1103/PhysRevC.97.055202",

language = "English",

volume = "97",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

Roy, P, Akbar, Z, Crede, V, Anisovich, AV, Denisenko, I, Klempt, E, Nikonov, VA, Sarantsev, AV, Adhikari, KP, Adhikari, S, Anefalos Pereira, S, Balossino, I, Bashkanov, M, Battaglieri, M, Batourine, V, Bedlinskiy, I, Biselli, AS, Boiarinov, S, Briscoe, WJ, Brock, J, Burkert, VD, Carlin, C, Carman, DS, Celentano, A, Charles, G, Chetry, T, Ciullo, G, Clary, BA, Cole, PL, Contalbrigo, M, D'Angelo, A, Dashyan, N, De Vita, R, Deur, A, Djalali, C, Dugger, M, Dupre, R, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fedotov, G, Fegan, S, Filippi, A, Fradi, A, Gavalian, G, Gevorgyan, N, Gilfoyle, GP, Giovanetti, KL, Watts, DP & The CLAS Collaboration 2018, 'Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory', Physical Review C, vol. 97, no. 5, 055202. https://doi.org/10.1103/PhysRevC.97.055202

TY - JOUR

T1 - Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory

AU - Roy, P.

AU - Akbar, Z.

AU - Crede, V.

AU - Anisovich, A. V.

AU - Denisenko, I.

AU - Klempt, E.

AU - Nikonov, V. A.

AU - Sarantsev, A. V.

AU - Adhikari, K. P.

AU - Adhikari, S.

AU - Anefalos Pereira, S.

AU - Balossino, I.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Brock, J.

AU - Burkert, V. D.

AU - Carlin, C.

AU - Carman, D. S.

AU - Celentano, A.

AU - Charles, G.

AU - Chetry, T.

AU - Ciullo, G.

AU - Clary, B. A.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - Deur, A.

AU - Djalali, C.

AU - Dugger, M.

AU - Dupre, R.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fedotov, G.

AU - Fegan, S.

AU - Filippi, A.

AU - Fradi, A.

AU - Gavalian, G.

AU - Gevorgyan, N.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Watts, D. P.

AU - The CLAS Collaboration

PY - 2018/5/4

Y1 - 2018/5/4

N2 - The photoproduction of ω mesons off the proton has been studied in the reaction γp→pω using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target in Hall B at the Thomas Jefferson National Accelerator Facility. For the first time, the target asymmetry T has been measured in photoproduction from the decay ω→π+π-π0, using a transversely polarized target with energies ranging from just above the reaction threshold up to 2.8 GeV. Significant nonzero values are observed for these asymmetries, reaching about 30-40% in the third-resonance region. New measurements for the photon-beam asymmetry Σ are also presented, which agree well with previous CLAS results and extend the world database up to 2.1 GeV. These data and additional ω photoproduction observables from CLAS were included in a partial-wave analysis within the Bonn-Gatchina framework. Significant contributions from s-channel resonance production were found in addition to t-channel exchange processes.

AB - The photoproduction of ω mesons off the proton has been studied in the reaction γp→pω using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target in Hall B at the Thomas Jefferson National Accelerator Facility. For the first time, the target asymmetry T has been measured in photoproduction from the decay ω→π+π-π0, using a transversely polarized target with energies ranging from just above the reaction threshold up to 2.8 GeV. Significant nonzero values are observed for these asymmetries, reaching about 30-40% in the third-resonance region. New measurements for the photon-beam asymmetry Σ are also presented, which agree well with previous CLAS results and extend the world database up to 2.1 GeV. These data and additional ω photoproduction observables from CLAS were included in a partial-wave analysis within the Bonn-Gatchina framework. Significant contributions from s-channel resonance production were found in addition to t-channel exchange processes.

UR - http://www.scopus.com/inward/record.url?scp=85047014782&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.97.055202

DO - 10.1103/PhysRevC.97.055202

M3 - Article

AN - SCOPUS:85047014782

SN - 2469-9985

VL - 97

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 055202

ER -

Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory

Abstract

Bibliographical note

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