First Measurements of the Double-Polarization Observables F, P, and H in omega Photoproduction off Transversely Polarized Protons in the N* Resonance Region

P. Roy,S. Park,V. Crede, A. V. Anisovich,E. Klempt,V. A. Nikonov,A. V. Sarantsev,N. C. Wei,F. Huang,K. Nakayama,K. P. Adhikari,S. Adhikari,G. Angelini,H. Avakian, L. Barion,M. Battaglieri, I. Bedlinskiy,A. S. Biselli,S. Boiarinov,W. J. Briscoe,J. Brock,W. K. Brooks,V. D. Burkert,F. Cao, C. Carlin,D. S. Carman,A. Celentano, P. Chatagnon,T. Chetry,G. Ciullo,P. L. Cole,M. Contalbrigo,O. Cortes,A. D'Angelo,N. Dashyan,R. De Vita,E. De Sanctis,A. Deur,S. Diehl, C. Djalali,M. Dugger,R. Dupre,B. Duran, H. Egiyan,M. Ehrhart,A. El Alaoui,L. El Fassi,P. Eugenio,S. Fegan,A. Filippi,A. Fradi,G. P. Gilfoyle,F. X. Girod, E. Golovatch,R. W. Gothe, K. A. Griffioen, M. Guidal,L. Guo,K. Hafidi,C. Hanretty,N. Harrison,M. Hattawy,T. B. Hayward, D. Heddle,K. Hicks, M. Holtrop,Y. Ilieva,D. G. Ireland,B. S. Ishkhanov,E. L. Isupov,D. Jenkins, H. S. Jo,S. Johnston,S. Joosten,M. L. Kabir,C. D. Keith,D. Keller, G. Khachatryan,M. Khachatryan,A. Khanal, M. Khandaker,A. Kim,W. Kim, F. J. Klein,V. Kubarovsky,S. V. Kuleshov, M. C. Kunkel,L. Lanza,P. Lenisa, K. Livingston,I. J. D. MacGregor, D. Marchand,B. McKinnon,D. G. Meekins,C. A. Meyer,T. Mineeva,V. Mokeev,R. A. Montgomery, A. Movsisyan,C. Munoz Camacho,P. Nadel-Turonski, S. Niccolai, G. Niculescu,M. Osipenko,A. I. Ostrovidov,M. Paolone, L. L. Pappalardo,R. Paremuzyan,E. Pasyuk, D. Payette, W. Phelps,J. Pierce, O. Pogorelko,Y. Prok,D. Protopopescu,B. A. Raue, M. Ripani, D. Riser,B. G. Ritchie,A. Rizzo,G. Rosner,F. Sabatie,C. Salgado,R. A. Schumacher, M. L. Seely,Y. G. Sharabian,U. Shrestha,Iu. Skorodumina,D. Sokhan,O. Soto,N. Sparveris, I. I. Strakovsky,S. Strauch, M. Taiuti, J. A. Tan,B. Torayev,N. Tyler,M. Ungaro, H. Voskanyan,E. Voutier,N. K. Walford,R. Wang, D. P. Watts,X. Wei,M. H. Wood,N. Zachariou,J. Zhang,Z. W. Zhao

arXiv: Nuclear Experiment（2019）

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摘要

First measurements of double-polarization observables in omega photoproduction off the proton are presented using transverse target polarization and data from the CEBAF Large Acceptance Spectrometer (CLAS) FROST experiment at Jefferson Lab. The beam-target asymmetry F has been measured using circularly polarized, tagged photons in the energy range 1200-2700 MeV, and the beam-target asymmetries H and P have been measured using linearly polarized, tagged photons in the energy range 1200-2000 MeV. These measurements significantly increase the database on polarization observables. The results are included in two partial-wave analyses and reveal significant contributions from several nucleon (N*) resonances. In particular, contributions from new N* resonances listed in the Review of Particle Properties are observed, which aid in reaching the goal of mapping out the nucleon resonance spectrum.

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