Beam-Target Helicity Asymmetry for γn→π−p in the N* Resonance Region (CROSBI ID 241788)
Prilog u časopisu | Pismo (znanstveno) | međunarodna recenzija
Podaci o odgovornosti
Ho, D. ; Peng, P. ; Bass, C. ; Collins, P. ; D'Angelo, A. ; Deur, A. ; Fleming, J. ; Hanretty, C. ; Kageya, T. ; Khandaker, M. ; Klein, F. J. ; Klempt, E. ; Laine, V. ; Lowry, M. M. ; Lu, H. ; Nepali, C. ; Nikonov, V. A. ; O'Connell, T. ; Sandorfi, A. M. ; Sarantsev, A. V. ; Schumacher, R. A. ; Strakovsky, I. I. ; Švarc, Alfred ; Walford, N. K. ; Wei, X. ; Whisnant, C. S. ; Workman, R. L. ; Zonta, I. ; Adhikari, K. P. ; Adikaram, D. ; Akbar, Z. ; Amaryan, M. J. ; Pereira, S. Anefalos ; Avakian, H. ; Ball, J. ; Bashkanov, M. ; Battaglieri, M. ; Batourine, V. ; Bedlinskiy, I. ; Biselli, A. ; Briscoe, W. J. ; Burkert, V. D. ; Carman, D. S. ; Celentano, A. ; Charles, G. ; Chetry, T. ; Ciullo, G. ; Clark, L. ; Colaneri, L. ; Cole, P. L. ; Contalbrigo, M. ; Crede, V. ; Dashyan, N. ; De Sanctis, E. ; De Vita, R. ; Djalali, C. ; Dupre, R. ; El Alaoui, A. ; El Fassi, L. ; Elouadrhiri, L. ; Eugenio, P. ; Fedotov, G. ; Fegan, S. ; Fersch, R. ; Filippi, A. ; Fradi, A. ; Ghandilyan, Y. ; Gilfoyle, G. P. ; Girod, F. X. ; Glazier, D. I. ; Gleason, C. ; Gohn, W. ; Golovatch, E. ; Gothe, R. W. ; Griffioen, K. A. ; Guidal, M. ; Guo, L. ; Hakobyan, H. ; Harrison, N. ; Hattawy, M. ; Hicks, K. ; Holtrop, M. ; Hughes, S. M. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Isupov, E. L. ; Jenkins, D. ; Jiang, H. ; Jo, H. S. ; Joo, K. ; Joosten, S. ; Keller, D. ; Khachatryan, G. ; Kim, A. ; Kim, W. ; Klein, A. ; Kubarovsky, V. ; Kuleshov, S. V. ; Lanza, L. ; Lenisa, P. ; Livingston, K. ; MacGregor, I. J. D. ; Markov, N. ; McKinnon, B. ; Mineeva, T. ; Mokeev, V. ; Montgomery, R. A. ; Movsisyan, A. ; Camacho, C. Munoz ; Murdoch, G. ; Niccolai, S. ; Niculescu, G. ; Osipenko, M. ; Paolone, M. ; Paremuzyan, R. ; Park, K. ; Pasyuk, E. ; Phelps, W. ; Pogorelko, O. ; Price, J. W. ; Procureur, S. ; Protopopescu, D. ; Ripani, M. ; Riser, D. ; Ritchie, B. G. ; Rizzo, A. ; Rosner, G. ; Sabatie, F. ; Salgado, C. ; Sharabian, Y. G. ; Skorodumina, Iu. ; Smith, G. D. ; Sober, D. I. ; Sokhan, D. ; Sparveris, N. ; Strauch, S. ; Tian, Ye ; Torayev, B. ; Ungaro, M. ; Voskanyan, H. ; Voutier, E. ; Watts, D. P. ; Wood, M. H. ; Zachariou, N. ; Zhang, J. ; Zhao, Z. W.
engleski
Beam-Target Helicity Asymmetry for γn→π−p in the N* Resonance Region
We report the first beam-target double- polarization asymmetries in the γ + n (p) → π− + p(p) reaction spanning the nucleon resonance region from invariant mass W = 1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target. These results have been incorporated into new partial wave analyses and have led to significant revisions for several γnN* resonance photocouplings.
pion photoproduction, spin observables, N* resonances
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
118
2017.
242002-1-242002-6
objavljeno
0031-9007
10.1103/PhysRevLett.118.242002
