التفاصيل البيبلوغرافية
العنوان:
First Measurement of the Polarization Observable E in the $\vec p(\vec \gamma,\pi^+)n$ Reaction up to 2.25 GeV
المؤلفون:
Strauch, S. , Briscoe, W. J. , Döring, M. , Klempt, E. , Nikonov, V. A. , Pasyuk, E. , Rönchen, D. , Sarantsev, A. V. , Strakovsky, I. , Workman, R. , Adhikari, K. P. , Adikaram, D. , Anderson, M. D. , Pereira, S. Anefalos , Anisovich, A. V. , Badui, R. A. , Ball, J. , Batourine, V. , Battaglieri, M. , Bedlinskiy, I. , Benmouna, N. , Biselli, A. S. , Brock, J. , Brooks, W. K. , Burkert, V. D. , Cao, T. , Carlin, C. , Carman, D. S. , Celentano, A. , Chandavar, S. , Charles, G. , Colaneri, L. , Cole, P. L. , Compton, N. , Contalbrigo, M. , Cortes, O. , Crede, V. , Dashyan, N. , D'Angelo, A. , De Vita, R. , De Sanctis, E. , Deur, A. , Djalali, C. , Dugger, M. , Dupre, R. , Egiyan, H. , Alaoui, A. El , Fassi, L. El , Elouadrhiri, L. , Eugenio, P. , Fedotov, G. , Fegan, S. , Filippi, A. , Fleming, J. A. , Forest, T. A. , Fradi, A. , Gevorgyan, N. , Ghandilyan, Y. , Giovanetti, K. L. , Girod, F. X. , Glazier, D. I. , Gohn, W. , Golovatch, E. , Gothe, R. W. , Griffioen, K. A. , Guidal, M. , Guo, L. , Hafidi, K. , Hakobyan, H. , Hanretty, C. , Harrison, N. , Hattawy, M. , Hicks, K. , Ho, D. , 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. , Keith, C. D. , Keller, D. , Khachatryan, G. , Khandaker, M. , Kim, A. , Kim, W. , Klein, A. , Klein, F. J. , Kubarovsky, V. , Kuhn, S. E. , Lenisa, P. , Livingston, K. , Lu, H. Y. , MacGregor, I . J . D. , Markov, N. , McKinnon, B. , Meekins, D. G. , Meyer, C. A. , Mokeev, V. , Montgomery, R. A. , Moody, C. I. , Moutarde, H. , Movsisyan, A , Munevar, E. , Camacho, C. Munoz , Nadel-Turonski, P. , Net, L. A. , Niccolai, S. , Niculescu, G. , Niculescu, I. , Osipenko, M. , Ostrovidov, A. I. , Park, K. , Peng, P. , Phelps, W. , Phillips, J. J. , Pisano, S. , Pogorelko, O. , Pozdniakov, S. , Price, J. W. , Procureur, S. , Prok, Y. , Protopopescu, D. , Puckett, A. J. R. , Raue, B. A. , Ripani, M. , Ritchie, B. G. , Rizzo, A. , Rosner, G. , Roy, P. , Sabatié, F. , Salgado, C. , Schott, D. , Schumacher, R. A. , Seder, E. , Seely, M. L. , Senderovich, I , Sharabian, Y. G. , Simonyan, A. , Skorodumina, Iu. , Smith, G. D. , Sober, D. I. , Sokhan, D. , Sparveris, N. , Stoler, P. , Stepanyan, S. , Sytnik, V. , Taiuti, M. , Tian, Ye , Trivedi, A. , Tucker, R. , Ungaro, M. , Voskanyan, H. , Voutier, E. , Walford, N. K. , Watts, D. P. , Wei, X. , Wood, M. H. , Zachariou, N. , Zana, L. , Zhang, J. , Zhao, Z. W. , Zonta, I.
سنة النشر:
2015
المجموعة:
High Energy Physics - Experiment
مصطلحات موضوعية:
Nuclear Experiment , High Energy Physics - Experiment
الوصف:
First results from the longitudinally polarized frozen-spin target (FROST) program are reported. The double-polarization observable E, for the reaction $\vec \gamma \vec p \to \pi^+n$, has been measured using a circularly polarized tagged-photon beam, with energies from 0.35 to 2.37 GeV. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer in Hall B at the Thomas Jefferson National Accelerator Facility. These polarization data agree fairly well with previous partial-wave analyses at low photon energies. Over much of the covered energy range, however, significant deviations are observed, particularly in the high-energy region where high-L multipoles contribute. The data have been included in new multipole analyses resulting in updated nucleon resonance parameters. We report updated fits from the Bonn-Gatchina, J\"ulich, and SAID groups.
نوع الوثيقة:
Working Paper
DOI:
10.1016/j.physletb.2015.08.053
URL الوصول:
http://arxiv.org/abs/1503.05163
رقم الأكسشن:
edsarx.1503.05163
قاعدة البيانات:
arXiv
