First Measurements of the Double-Polarization Observables F, P, and H in ω Photoproduction off Transversely Polarized Protons in the N∗ Resonance Region
Journal
Physical Review Letters
Date Issued
2019-04-23
Author(s)
Roy, P.
Park, S.
Crede, V.
Anisovich, A. V.
Klempt, E.
Nikonov, V. A.
Sarantsev, A. V.
Wei, N. C.
Huang, F.
Nakayama, K.
Adhikari, K. P.
Adhikari, S.
Angelini, G.
Avakian, H.
Barion, L.
Battaglieri, M.
Bedlinskiy, I.
Biselli, A. S.
Boiarinov, S.
Briscoe, W. J.
Brock, J.
Burkert, V. D.
Cao, F.
Carlin, C.
Carman, D. S.
Celentano, A.
Chatagnon, P.
Chetry, T.
Ciullo, G.
Cole, P. L.
Contalbrigo, M.
Cortes, O.
D'Angelo, A.
Dashyan, N.
De Vita, R.
De Sanctis, E.
Deur, A.
Diehl, S.
Djalali, C.
Dugger, M.
Dupre, R.
Duran, B.
Egiyan, H.
Ehrhart, M.
El Fassi, L.
Eugenio, P.
Fegan, S.
Filippi, A.
Fradi, A.
Gilfoyle, G. P.
Girod, F. X.
Golovatch, E.
Gothe, R. W.
Griffioen, K. A.
Guidal, M.
Guo, L.
Hafidi, K.
Hanretty, C.
Harrison, N.
Hattawy, M.
Hayward, T. B.
Heddle, D.
Hicks, K.
Holtrop, M.
Ilieva, Y.
Ireland, D. G.
Ishkhanov, B. S.
Isupov, E. L.
Jenkins, D.
Jo, H. S.
Johnston, S.
Joosten, S.
Kabir, M. L.
Keith, C. D.
Keller, D.
Khachatryan, G.
Khachatryan, M.
Khanal, A.
Khandaker, M.
Kim, A.
Kim, W.
Klein, F. J.
Kubarovsky, V.
Kunkel, M. C.
Lanza, L.
Lenisa, P.
Livingston, K.
Macgregor, I. J.D.
Marchand, D.
McKinnon, B.
Meekins, D. G.
Meyer, C. A.
Mokeev, V.
Montgomery, R. A.
Movsisyan, A.
Munoz Camacho, C.
DOI
10.1103/PhysRevLett.122.162301
Abstract
© 2019 American Physical Society. First measurements of double-polarization observables in ω 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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