Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target

Airapetian, A. and Akopov, N. and Akopov, Z. and Aschenauer, E. C. and Augustyniak, W. and Avakian, R. and Avetissian, A. and Avetisyan, E. and Ball, B. and Belostotski, S. and Blok, H. P. and Borissov, A. and Bowles, J. and Bryzgalov, V. and Burns, J. and Capitani, G. P. and Cisbani, E. and Ciullo, G. and Contalbrigo, M. and Dalpiaz, P. F. and Deconinck, W. and De Leo, R. and De Nardo, L. and De Sanctis, E. and Diefenthaler, M. and Di Nezza, P. and Dueren, M. and Ehrenfried, M. and Elbakian, G. and Ellinghaus, F. and Fabbri, R. and Fantoni, A. and Felawka, L. and Frullani, S. and Gabbert, D. and Gapienko, G. and Gapienko, V. and Garibaldi, F. and Gavrilov, G. and Gharibyan, V. and Giordano, F. and Gliske, S. and Hadjidakis, C. and Hartig, M. and Hasch, D. and Hill, G. and Hillenbrand, A. and Hoek, M. and Holler, Y. and Hristova, I. and Imazu, Y. and Ivanilov, A. and Jackson, H. E. and Jo, H. S. and Joosten, S. and Kaiser, R. and Karyan, G. and Keri, T. and Kinney, E. and Kisselev, A. and Kobayashi, N. and Korotkov, V. and Kozlov, V. and Kravchenko, P. and Lagamba, L. and Lamb, R. and Lapikas, L. and Lehmann, I. and Lenisa, P. and Ruiz, A. Lopez and Lorenzon, W. and Lu, X. -G. and Lu, X. -R. and Ma, B. -Q. and Mahon, D. and Makins, N. C. R. and Manaenkov, S. I. and Mao, Y. and Marianski, B. and de la Ossa, A. Martinez and Marukyan, H. and Miller, C. A. and Miyachi, Y. and Movsisyan, A. and Muccifora, V. and Murray, M. and Mussgiller, A. and Nappi, E. and Naryshkin, Y. and Nass, A. and Negodaev, M. and Nowak, W. -D. and Pappalardo, L. L. and Perez-Benito, R. and Pickert, N. and Raithel, M. and Reimer, P. E. and Reolon, A. R. and Riedl, C. and Rith, K. and Rosner, G. and Rostomyan, A. and Rubin, J. and Ryckbosch, D. and Salomatin, Y. and Sanftl, F. and Schaefer, A. and Schnell, G. and Schueler, K. P. and Seitz, B. and Shibata, T. -A. and Shutov, V. and Stancari, M. and Statera, M. and Steffens, E. and Steijger, J. J. M. and Stenzel, H. and Stewart, J. and Stinzing, F. and Terkulov, A. and Trzcinski, A. and Tytgat, M. and Van Haarlem, Y. and Van Hulse, C. and Veretennikov, D. and Vikhrov, V. and Vilardi, I. and Vogel, C. and Wang, S. and Yaschenko, S. and Ye, Z. and Yen, S. and Yu, W. and Zeiler, D. and Zihlmann, B. and Zupranski, P. (2009) Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target. JOURNAL OF HIGH ENERGY PHYSICS (11): 083. ISSN 1029-8479,

Full text not available from this repository. (Request a copy)

Abstract

Hard exclusive leptoproduction of real photons from an unpolarized proton target is studied in an effort to elucidate generalized parton distributions. The data accumulated during the years 1996-2005 with the HERMES spectrometer are analyzed to yield asymmetries with respect to the combined dependence of the cross section on beam helicity and charge, thereby revealing previously unseparated contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process. The integrated luminosity is sufficient to show correlated dependences on two kinematic variables, and provides the most precise determination of the dependence on only the beam charge.

Item Type: Article
Uncontrolled Keywords: PARTON DISTRIBUTIONS; NUCLEON; SPIN; ELECTROPRODUCTION; AMPLITUDE; Lepton-Nucleon Scattering
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer
Depositing User: Dr. Gernot Deinzer
Date Deposited: 02 Sep 2020 09:56
Last Modified: 02 Sep 2020 09:56
URI: https://pred.uni-regensburg.de/id/eprint/28207

Actions (login required)

View Item View Item