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
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Pre-printDate
2018-05-04Author
Roy, PAkbar, Z
Park, S
Crede, V
Anisovich, AV
Denisenko, I
Klempt, E
Nikonov, VA
Sarantsev, AV
Adhikari, KP
Adhikari, S
Anefalos Pereira, S
Ball, J
Balossino, I
Bashkanov, M
Battaglieri, M
Batourine, V
Bedlinskiy, I
Biselli, AS
Boiarinov, S
Briscoe, WJ
Brock, J
Brooks, WK
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
Girod, FX
Gleason, C
Gohn, W
Golovatch, E
Gothe, RW
Griffioen, KA
Guidal, M
Guo, L
Hafidi, K
Hakobyan, H
Hanretty, C
Hattawy, M
Hicks, K
Holtrop, M
Ilieva, Y
Ireland, DG
Ishkhanov, BS
Isupov, EL
Jenkins, D
Joo, K
Joosten, S
Keith, CD
Keller, D
Khachatryan, G
Khandaker, M
Kim, A
Kim, W
Klein, A
Klein, FJ
Kubarovsky, V
Kuleshov, SV
Lanza, L
Lenisa, P
Livingston, K
Lu, HY
MacGregor, IJD
Markov, N
Mayer, M
McCracken, ME
McKinnon, B
Meekins, DG
Meyer, CA
Meziani, ZE
Mineeva, T
Mokeev, V
Montgomery, RA
Movsisyan, A
Munoz Camacho, C
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http://hdl.handle.net/20.500.12613/4669
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10.1103/PhysRevC.97.055202Abstract
© 2018 American Physical Society. 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.Citation to related work
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http://dx.doi.org/10.34944/dspace/4651