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Target And Beam-target Spin Asymmetries In Exclusive Pion Electroproduction For Q(2) > 1 Gev2. I. Ep -> E Pi(+)n

Title: Target And Beam-target Spin Asymmetries In Exclusive Pion Electroproduction For Q(2) > 1 Gev2. I. Ep -> E Pi(+)n.
Name(s): Bosted, P. E., author
Amaryan, M. J., author
Pereira, S. Anefalos, author
Avakian, H., author
Badui, R. A., author
Ball, J., author
Baltzell, N. A., author
Battaglieri, M., author
Batourine, V., author
Bedlinskiy, I., author
Biselli, A. S., author
Briscoe, W. J., author
Bultmann, S., author
Burkert, V. D., author
Carman, D. S., author
Celentano, A., author
Chandavar, S., author
Charles, G., author
Ciullo, G., author
Clark, L., author
Colaneri, L., author
Cole, P. L., author
Contalbrigo, M., author
Crede, V., author
D'Angelo, A., author
De Vita, R., author
Deur, A., author
De Sanctis, E., author
Djalali, C., author
Dupre, R., author
Egiyan, H., author
El Alaoui, A., author
El Fassi, L., author
Elouadrhiri, L., author
Eugenio, P., author
Fanchini, E., author
Fedotov, G., author
Filippi, A., author
Fleming, J. A., author
Forest, T., author
Fradi, A., author
Gevorgyan, N., author
Ghandilyan, Y., author
Gilfoyle, G. P., author
Girod, F. X., author
Gleason, C., author
Gohn, W., author
Golovatch, E., author
Gothe, R. W., author
Griffioen, K. A., author
Guidal, M., author
Hakobyan, H., author
Hattawy, M., author
Hicks, K., author
Holtrop, M., author
Hughes, S. M., author
Ilieva, Y., author
Ireland, D. G., author
Ishkhanov, B. S., author
Isupov, E. L., author
Jiang, H., author
Jo, H. S., author
Joo, K., author
Joosten, S., author
Khachatryan, G., author
Khandaker, M., author
Kim, A., author
Kim, W., author
Klein, F. J., author
Koirala, S., author
Kubarovsky, V., author
Kuhn, S. E., author
Lanza, L., author
Net, L. A., author
Lenisa, P., author
Livingston, K., author
MacGregor, I. J. D., author
McCracken, M. E., author
McKinnon, B., author
Meyer, C. A., author
Mirazita, M., author
Mokeev, V. I., author
Montgomery, R. A., author
Munevar, E., author
Camacho, C. Munoz, author
Murdoch, G., author
Nadel-Turonski, P., author
Niccolai, S., author
Osipenko, M., author
Ostrovidov, A. I., author
Park, K., author
Pasyuk, E., author
Peng, P., author
Phelps, W., author
Pisano, S., author
Pogorelko, O., author
Price, J. W., author
Prok, Y., author
Protopopescu, D., author
Puckett, A. J. R., author
Raue, B. A., author
Ripani, M., author
Rosner, G., author
Rossi, P., author
Schumacher, R. A., author
Seder, E., author
Skorodumina, Iu, author
Smith, G. D., author
Sokhan, D., author
Sparveris, N., author
Stankovic, I., author
Stepanyan, S., author
Strakovsky, I. I., author
Strauch, S., author
Taiuti, M., author
Tian, Ye, author
Torayev, B., author
Ungaro, M., author
Voskanyan, H., author
Voutier, E., author
Walford, N. K., author
Wei, X., author
Weinstein, L. B., author
Zachariou, N., author
Zhang, J., author
Zhao, Z. W., author
Zonta, I., author
Type of Resource: text
Genre: Journal Article
Journal Article
Date Issued: 2017-03-20
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive pi(+) electroproduction reaction. gamma(*) p -> n pi(+). The results were obtained from scattering of 6-GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The kinematic range covered is 1.1 < W < 3 GeV and 1 < Q(2) < 6 GeV2. Results were obtained for about 6000 bins in W, Q(2), cos(theta(*)), and phi(*). Except at forward angles, very large target-spin asymmetries are observed over the entire W region. Reasonable agreement is found with phenomenological fits to previous data for W < 1.6 GeV, but very large differences are seen at higher values of W. A generalized parton distributions (GPD)-based model is in poor agreement with the data. When combined with cross-sectional measurements, the present results provide powerful constraints on nucleon resonance amplitudes at moderate and large values of Q(2), for resonances with masses as high as 2.4 GeV.
Identifier: FSU_libsubv1_wos_000399238200004 (IID), 10.1103/PhysRevC.95.035206 (DOI)
Keywords: clas, form-factor, mesons, q2
Publication Note: The publisher's version of record is available at
Persistent Link to This Record:
Host Institution: FSU
Is Part Of: Physical Review C.
Issue: iss. 3, vol. 95

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Bosted, P. E., Amaryan, M. J., Pereira, S. A., Avakian, H., Badui, R. A., Ball, J., … Zonta, I. (2017). Target And Beam-target Spin Asymmetries In Exclusive Pion Electroproduction For Q(2) > 1 Gev2. I. Ep -> E Pi(+)n. Physical Review C. Retrieved from