Measurement of azimuthal asymmetries with respect to both beam charge and transverse target polarization in exclusive electroproduction of real photons

Airapetian, A. et al. (2008) Measurement of azimuthal asymmetries with respect to both beam charge and transverse target polarization in exclusive electroproduction of real photons. Journal of High Energy Physics, 2008(6), 066. (doi: 10.1088/1126-6708/2008/06/066)

Abstract

Azimuthal asymmetries in exclusive electroproduction of real photons are measured for the first time with respect to transverse target polarisation, providing new constraints on Generalized Parton Distributions. From the same data set on a hydrogen target, new results for the beam-charge asymmetry are also extracted with better precision than those previously reported. By comparing model calculations with measured asymmetries attributed to the interference between the deeply virtual Compton scattering and Bethe-Heitler processes, a model-dependent constraint is obtained on the total angular momenta carried by up and down quarks in the nucleon.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Mahon, Mr David and Murray, Dr Morgan and Hoek, Mr Matthias and Keri, Dr Tibor and Hill, Mr Gordon and Burns, Mr Jonathan and Kaiser, Professor Ralf and Lehmann, Dr Inti and Seitz, Dr Bjoern and Rosner, Professor Guenther
• Authors: Airapetian, A., Akopov, N., Akopov, Z., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, R., Avetissian, A., Avetisyan, E., Barion, L., Belostotski, S., Bianchi, N., Blok, H.P., Böttcher, H., Bonomo, C., Borissov, A., Brüll, A., Bryzgalov, V., Burns, J., Capiluppi, M., Capitani, G.P., Cisbani, E., Ciullo, G., Contalbrigo, M., Dalpiaz, P.F., Deconinck, W., Leo, R. D., Demey, M., Nardo, L. D., Sanctis, E. D., Diefenthaler, M., Nezza, P. D., Dreschler, J., Düren, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Fabbri, R., Fantoni, A., Felawka, L., Frullani, S., Funel, A., Gabbert, D., Gapienko, G., Gapienko, V., Garibaldi, F., Gavrilov, G., Gharibyan, V., Giordano, F., Gliske, S., Guler, H., Hadjidakis, C., Hasch, D., Hasegawa, T., Hill, G., Hillenbrand, A., Hoek, M., Holler, Y., Hristova, I., Iarygin, G., Imazu, Y., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Joosten, S., Kaiser, R., Keri, T., Kinney, E., Kisselev, A., Kopytin, M., Korotkov, V., Kozlov, V., Kravchenko, P., Krivokhijine, V.G., Lagamba, L., Lamb, R., Lapikás, L., Lehmann, I., Lenisa, P., Linden-Levy, L.A., Lorenzon, W., Lu, S., Lu, X., Ma, B.-Q., Mahon, D., Maiheu, B., Makins, N.C.R., Mao, Y., Marianski, B., Marukyan, H., Miller, C.A., Miyachi, Y., Muccifora, V., Murray, M., Mussgiller, A., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.-D., Osborne, A., Pappalardo, L.L., Perez-Benito, R., Pickert, N., Raithel, M., Reimer, P.E., Reischl, A., Reolon, A.R., Riedl, C., Rith, K., Rock, S.E., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ruiz, A.L., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Schäfer, A., Schnell, G., Schüler, K.P., Seitz, B., Shearer, C., Shibata, T.-A., Shutov, V., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stenzel, H., Stewart, J., Stinzing, F., Tait, P., Taroian, S., Terkulov, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., Nat, P.B. v. d., Steenhoven, G. v. d., Haarlem, Y. V., Hulse, C. V., Varanda, M., Veretennikov, D., Vikhrov, V., Vilardi, I., Vogel, C., Wang, S., Yaschenko, S., Ye, H., Ye, Z., Yen, S., Yu, W., Zeiler, D., Zihlmann, B., and Zupranski, P.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Journal of High Energy Physics
• Publisher: Institute of Physics Publishing Ltd.
• ISSN: 1029-8479
• Copyright Holders: Copyright © 2008 IOP Publishing Ltd.
• First Published: First published in Journal of High Energy Physics 2008(6):066
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher