Exclusive π0 electroproduction at W>2 GeV with clas exclusive π0 electroproduction at W>2 ⋯ I. BEDLINSKIY et al.

I. Bedlinskiy, V. Kubarovsky, S. Niccolai, P. Stoler, K. P. Adhikari, M. D. Anderson, S. Anefalos Pereira, H. Avakian, J. Ball, N. A. Baltzell, M. Battaglieri, V. Batourine, A. S. Biselli, S. Boiarinov, J. Bono, W. J. Briscoe, W. K. Brooks, V. D. Burkert, D. S. Carman, A. CelentanoS. Chandavar, L. Colaneri, P. L. Cole, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, C. Djalali, D. Doughty, R. Dupre, H. Egiyan, A. El Alaoui, L. El Fassi, L. Elouadrhiri, P. Eugenio, G. Fedotov, S. Fegan, J. A. Fleming, T. A. Forest, B. Garillon, M. Garçon, G. Gavalian, N. Gevorgyan, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, E. Golovatch, R. W. Gothe, K. A. Griffioen, B. Guegan, L. Guo, K. Hafidi, H. Hakobyan, N. Harrison, M. Hattawy, K. Hicks, M. Holtrop, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, D. Jenkins, H. S. Jo, K. Joo, D. Keller, M. Khandaker, A. Kim, W. Kim, A. Klein, F. J. Klein, S. Koirala, S. E. Kuhn, S. V. Kuleshov, P. Lenisa, W. I. Levine, K. Livingston, H. Y. Lu, I. J D Macgregor, N. Markov, M. Mayer, B. McKinnon, M. Mirazita, V. Mokeev, R. A. Montgomery, C. I. Moody, H. Moutarde, A. Movsisyan, C. Munoz Camacho, P. Nadel-Turonski, I. Niculescu, M. Osipenko, A. I. Ostrovidov, L. L. Pappalardo, K. Park, S. Park, E. Pasyuk, E. Phelps, W. Phelps, J. J. Phillips, S. Pisano, O. Pogorelko, J. W. Price, Y. Prok, D. Protopopescu, S. Procureur, A. J R Puckett, B. A. Raue, M. Ripani, Barry Ritchie, A. Rizzo, P. Rossi, P. Roy, F. Sabatié, C. Salgado, D. Schott, R. A. Schumacher, E. Seder, I. Senderovich, Y. G. Sharabian, A. Simonyan, G. D. Smith, D. I. Sober, D. Sokhan, S. S. Stepanyan, S. Strauch, V. Sytnik, W. Tang, Ye Tian, M. Ungaro, A. V. Vlassov, H. Voskanyan, E. Voutier, N. K. Walford, D. Watts, X. Wei, L. B. Weinstein, M. Yurov, N. Zachariou, L. Zana, J. Zhang, Z. W. Zhao, I. Zonta

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Abstract

Exclusive neutral-pion electroproduction (ep→e′p′π0) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdφπ and structure functions σT+εσL,σTT, and σLT as functions of t were obtained over a wide range of Q2 and xB. The data are compared with Regge and handbag theoretical calculations. Analyses in both frameworks find that a large dominance of transverse processes is necessary to explain the experimental results. For the Regge analysis it is found that the inclusion of vector meson rescattering processes is necessary to bring the magnitude of the calculated and measured structure functions into rough agreement. In the handbag framework, there are two independent calculations, both of which appear to roughly explain the magnitude of the structure functions in terms of transversity generalized parton distributions.

Original languageEnglish (US)
Article number025205
JournalPhysical Review C - Nuclear Physics
Volume90
Issue number2
DOIs
StatePublished - Aug 13 2014

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Bedlinskiy, I., Kubarovsky, V., Niccolai, S., Stoler, P., Adhikari, K. P., Anderson, M. D., Anefalos Pereira, S., Avakian, H., Ball, J., Baltzell, N. A., Battaglieri, M., Batourine, V., Biselli, A. S., Boiarinov, S., Bono, J., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., ... Zonta, I. (2014). Exclusive π0 electroproduction at W>2 GeV with clas exclusive π0 electroproduction at W>2 ⋯ I. BEDLINSKIY et al. Physical Review C - Nuclear Physics, 90(2), [025205]. https://doi.org/10.1103/PhysRevC.90.025205