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
Creators: name: Roy, P.
name: Akbar, Z.
name: Park, S.
name: Crede, V.
name: Anisovich, A. V.
name: Denisenko, I.
name: Klempt, E.
name: Nikonov, V. A.
name: Sarantsev, A. V.
name: Adhikari, K. P.
name: Adhikari, S.
name: Pereira, S. Anefalos
name: Ball, J.
name: Balossino, I.
name: Bashkanov, M.
name: Battaglieri, M.
name: Batourine, V.
name: Bedlinskiy, I.
name: Biselli, A. S.
name: Boiarinov, S.
name: Briscoe, W. J.
name: Brock, J.
name: Brooks, W. K.
name: Burkert, V. D.
name: Carlin, C.
name: Carman, D. S.
name: Celentano, A.
name: Charles, G.
name: Chetry, T.
name: Ciullo, G.
name: Clary, B. A.
name: Cole, P. L.
name: Contalbrigo, M.
name: D'Angelo, A.
name: Dashyan, N.
name: De Vita, R.
name: Deur, A.
name: Djalali, C.
name: Dugger, M.
name: Dupre, R.
name: Alaoui, A. El
name: Fassi, L. El
name: Elouadrhiri, L.
name: Eugenio, P.
name: Fedotov, G.
name: Fegan, S.
name: Filippi, A.
name: Fradi, A.
name: Gavalian, G.
name: Gevorgyan, N.
name: Gilfoyle, G. P.
name: Giovanetti, K. L.
name: Girod, F. X.
name: Gleason, C.
name: Gohn, W.
name: Golovatch, E.
name: Gothe, R. W.
name: Griffioen, K. A.
name: Guidal, M.
name: Guo, L.
name: Hafidi, K.
name: Hakobyan, H.
name: Hanretty, C.
name: Hattawy, M.
name: Hicks, K.
name: Holtrop, M.
name: Ilieva, Y.
name: Ireland, D. G.
name: Ishkhanov, B. S.
name: Isupov, E. L.
name: Jenkins, D.
name: Joo, K.
name: Joosten, S.
name: Keith, C. D.
name: Keller, D.
name: Khachatryan, G.
name: Khandaker, M.
name: Kim, A.
name: Kim, W.
name: Klein, A.
name: Klein, F. J.
name: Kubarovsky, V.
name: Kuleshov, S. V.
name: Lanza, L.
name: Lenisa, P.
name: Livingston, K.
name: Lu, H. Y.
name: MacGregor, I. J. D.
name: Markov, N.
name: Mayer, M.
name: McCracken, M. E.
name: McKinnon, B.
name: Meekins, D. G.
name: Meyer, C. A.
name: Meziani, Z. E.
name: Mineeva, T.
name: Mokeev, V.
name: Montgomery, R. A.
name: Movsisyan, A.
name: Camacho, C. Munoz
name: Nadel-Turonski, P.
name: Niccolai, S.
name: Niculescu, G.
name: Osipenko, M.
name: Ostrovidov, A. I.
name: Paremuzyan, R.
name: Park, K.
name: Pasyuk, E.
name: Phelps, E.
name: Phelps, W.
name: Pierce, J. J.
name: Pogorelko, O.
name: Price, J. W.
name: Procureur, S.
name: Prok, Y.
name: Protopopescu, D.
name: Raue, B. A.
name: Ripani, M.
name: Riser, D.
name: Ritchie, B. G.
name: Rizzo, A.
name: Rosner, G.
name: Sabatie, F.
name: Salgado, C.
name: Schumacher, R. A.
name: Sharabian, Y. G.
name: Skorodumina, Iu.
name: Smith, G. D.
name: Sober, D. I.
name: Sokhan, D.
name: Sparveris, N.
name: Stepanyan, S.
name: Strakovsky, I. I.
name: Strauch, S.
name: Taiuti, M.
name: Tan, J. A.
name: Torayev, B.
name: Ungaro, M.
name: Voutier, E.
name: Walford, N. K.
name: Watts, D. P.
name: Wei, X.
name: Wood, M. H.
name: Zachariou, N.
name: Zhang, J.
name: Zhao, Z. W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The photoproduction of $ω$ mesons off the proton has been studied in the reaction $γp\to p\,ω$ using the CEBAF Large Acceptance Spectrometer (CLAS) and the frozen-spin target (FROST) 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 $ω\toπ^+π^-π^0$, using a transversely-polarized target with energies ranging from just above the reaction threshold up to 2.8 GeV. Significant non-zero 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.
description: 15 pages, 10 figures, author list and references updated