Journal article

Beam-charge azimuthal asymmetry and deeply virtual Compton scattering


Authors listAirapetian, A.; Akopov, N.; Akopov, Z.; Amarian, M.; Andrus, A.; Aschenauer, E. C.; Augustyniak, W.; Avakian, R.; Avetissian, A.; Avetissian, E.; Bailey, P.; Balin, D.; Beckmann, M.; Belostotski, S.; Bianchi, N.; Blok, H. P.; Boettcher, H.; Borissov, A.; Borysenko, A.; Bouwhuis, M.; Bruell, A.; Bryzgalov, V.; Capiluppi, M.; Capitani, G. P.; Chen, T.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Deconinck, W.; De Leo, R.; Demey, M.; De Nardo, L.; De Sanctis, E.; Devitsin, E.; Di Nezza, P.; Dreschler, J.; Dueren, M.; Ehrenfried, M.; Elalaoui-Moulay, A.; Elbakian, G.; Ellinghaus, F.; Elschenbroich, U.; Fabbri, R.; Fantoni, A.; Felawka, L.; Frullani, S.; Funel, A.; Gapienko, G.; Gapienko, V.; Garibaldi, F.; Garrow, K.; Gaskell, D.; Gavrilov, G.; Gharibyan, V.; Grebeniouk, O.; Gregor, I. M.; Hadjidakis, C.; Hafidi, K.; Hartig, M.; Hasch, D.; Hesselink, W. H. A.; Hillenbrand, A.; Hoek, M.; Holler, Y.; Hommez, B.; Hristova, I.; Iarygin, G.; Ivanilov, A.; Izotov, A.; Jackson, H. E.; Jgoun, A.; Kaiser, R.; Kinney, E.; Kisselev, A.; Kobayashi, T.; Kopytin, M.; Korotkov, V.; Kozlov, V.; Krauss, B.; Krivokhijine, V. G.; Lagamba, L.; Lapikas, L.; Laziev, A.; Lenisa, P.; Liebing, P.; Linden-Levy, L. A.; Lorenzon, W.; Lu, H.; Lu, J.; Lu, S.; Ma, B. -Q.; Maiheu, B.; Makins, N. C. R.; Mao, Y.; Marianski, B.; Marukyan, H.; Masoli, F.; Mexner, V.; Meyners, N.; Michler, T.; Mikloukho, O.; Miller, C. A.; Miyachi, Y.; Muccifora, V.; Murray, M.; Nagaitsev, A.; Nappi, E.; Naryshkin, Y.; Negodaev, M.; Nowak, W. -D.; Oganessyan, K.; Ohsuga, H.; Osborne, A.; Pickert, N.; Potterveld, D. H.; Raithel, M.; Reggiani, D.; Reimer, P. E.; Reischl, A.; Reolon, A. R.; Riedl, C.; Rith, K.; Rosner, G.; Rostomyan, A.; Rubacek, L.; Rubin, J.; Ryckbosch, D.; Salomatin, Y.; Sanjiev, I.; Savin, I.; Schaefer, A.; Schnell, G.; Schueler, K. P.; Seele, J.; Seidl, R.; Seitz, B.; Shanidze, R.; Shearer, C.; Shibata, T. -A.; Shutov, V.; Sinram, K.; Sommer, W.; Stancari, M.; Statera, M.; Steffens, E.; Steijger, J. J. M.; Stenzel, H.; Stewart, J.; Stinzing, F.; Tait, P.; Tanaka, H.; Taroian, S.; Tchuiko, B.; Terkulov, A.; Trzcinski, A.; Tytgat, M.; Vandenbroucke, A.; van der Nat, P. B.; van der Steenhoven, G.; van Haarlem, Y.; Vikhrov, V.; Vincter, M. G.; Vogel, C.; Volmer, J.; Wang, S.; Wendland, J.; Ye, Y.; Ye, Z.; Yen, S.; Zihlmann, B.; Zupranski, P.

Publication year2007

JournalPhysical Review D

Volume number75

Issue number1

ISSN1550-7998

eISSN1550-2368

DOI Linkhttps://doi.org/10.1103/PhysRevD.75.011103

PublisherAmerican Physical Society


Abstract
The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions.



Citation Styles

Harvard Citation styleAirapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E., et al. (2007) Beam-charge azimuthal asymmetry and deeply virtual Compton scattering, PHYSICAL REVIEW D, 75(1), Article 011103. https://doi.org/10.1103/PhysRevD.75.011103

APA Citation styleAirapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Balin, D., Beckmann, M., Belostotski, S., Bianchi, N., Blok, H., Boettcher, H., Borissov, A., Borysenko, A., ...Zupranski, P. (2007). Beam-charge azimuthal asymmetry and deeply virtual Compton scattering. PHYSICAL REVIEW D. 75(1), Article 011103. https://doi.org/10.1103/PhysRevD.75.011103


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