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
- Roy, P.
- Akbar, Z.
- Park, S.
- Crede, V.
- Anisovich, A. V.
- Denisenko, I.
- Klempt, E.
- Nikonov, V. A.
- Sarantsev, A. V.
- Adhikari, K. P.
- Adhikari, S.
- Anefalos Pereira, S.
- Ball, J.
- Balossino, I.
- Bashkanov, M.
- Battaglieri, M.
- Batourine, V.
- Bedlinskiy, I.
- Biselli, A. S.
- Boiarinov, S.
- Briscoe, W. J.
- Brock, J.
- Brooks, W. K.
- Burkert, V. D.
- Carlin, C.
- Carman, D. S.
- Celentano, A.
- Charles, G.
- Chetry, T.
- Ciullo, G.
- Clary, B. A.
- Cole, P. L.
- 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, G. P.
- Giovanetti, K. L.
- Girod, F. X.
- Gleason, C.
- Gohn, W.
- Golovatch, E.
- Gothe, R. W.
- Griffioen, K. A.
- Guidal, M.
- Guo, L.
- Hafidi, K.
- Hakobyan, H.
- Hanretty, C.
- Hattawy, M.
- Hicks, K.
- Holtrop, M.
- Ilieva, Y.
- Ireland, D.G.
- Ishkhanov, B. S.
- Isupov, E. L.
- Jenkins, D.
- Joo, K.
- Joosten, S.
- Keith, C. D.
- Keller, D.
- Khachatryan, G.
- Khandaker, M.
- Kim, A.
- Kim, W.
- Klein, A.
- Klein, F. J.
- Kubarovsky, V.
- Kuleshov, S. V.
- Lanza, L.
- Lenisa, P.
- Livingston, K.
- Lu, H. Y.
- MacGregor, I.J.D.
- Markov, N.
- Mayer, M.
- McCracken, M. E.
- McKinnon, B.
- Meekins, D. G.
- Meyer, C. A.
- Meziani, Z. E.
- Mineeva, T.
- Mokeev, V.
- Montgomery, R.A.
- Movsisyan, A.
- Munoz Camacho, C.
- Nadel-Turonski, P.
- Niccolai, S.
- Niculescu, G.
- Osipenko, M.
- Ostrovidov, A. I.
- Paremuzyan, R.
- Park, K.
- Pasyuk, E.
- Phelps, E.
- Phelps, W.
- Pierce, J. J.
- Pogorelko, O.
- Price, J. W.
- Procureur, S.
- Prok, Y.
- Protopopescu, D.
- Raue, B. A.
- Ripani, M.
- Riser, D.
- Ritchie, B. G.
- Rizzo, A.
- Rosner, G.
- Sabatié, F.
- Salgado, C.
- Schumacher, R. A.
- Sharabian, Y. G.
- Skorodumina, Iu.
- Smith, G.D.
- Sober, D. I.
- Sokhan, D.
- Sparveris, N.
- Stepanyan, S.
- Strakovsky, I. I.
- Strauch, S.
- Taiuti, M.
- Tan, J. A.
- Torayev, B.
- Ungaro, M.
- Voutier, E.
- Walford, N. K.
- Watts, D. P.
- Wei, X.
- Wood, M. H.
- Zachariou, N.
- Zhang, J.
- Zhao, Z. W.
DOIAbstract
The photoproduction of ω mesons off the proton has been studied in the reaction γp → p ω 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 ...
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