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    Avakian, H; Eugenio, P; Anghinolfi, M; Asryan, G; Bagdasaryan, H; Bedlinskiy, I; Bektasoglu, M; Bellis, M; Benmouna, N; Berman, B L; Biselli, A S; Boiarinov, S; Bradford, R; Branford, D; Bültmann, S; Butuceanu, C; Calarco, J R; Carnahan, B; Cummings, J P; De Sanctis, E; Degtyarenko, P V; Dennis, L; Deur, A; Dhuga, K S; Doughty, D; Dytman, S; El Fassi, L; Feldman, G; Funsten, H; Gavalian, G; Gilfoyle, G P; Giovanetti, K L; Goetz, J T; Griffioen, K A; Guidal, M; Guillo, M; Heddle, D; Hicks, K; Ilieva, Y; Isupov, E L; Jenkins, D; Jo, H S; Keith, C; Kim, K Y; Kim, W; Klein, A; Klein, F J; Klusman, M; Kossov, M; Kramer, L H; Kuhn, J; Kuleshov, S V; Li, Ji; Lima, A C S; Livingston, K; Markov, N; McNabb, J W C; Mestayer, M D; Meyer, C A; Mibe, T; Minehart, R; Napolitano, J; Natasha, N; Niculescu, G; Niculescu, I; Niczyporuk, B B; Niroula, M R; Niyazov, R A; O'Rielly, G V; Pivnyuk, N; Pocanic, D; Pogorelko, O; Polli, E; Popa, I; Qin, L M; Ripani, M; Ritchie, B G; Rubin, P D; Salgado, C; Santoro, J P; Sapunenko, V; Sharabian, Y G; Skabelin, A V; Smith, E S; Stepanyan, S; Stoler, P; Strakovsky, I I; Suleiman, R; Tkachenko, S; Todor, L; Tur, C; Ungaro, M; Vineyard, M F; Vlassov, A V; Watts, D P; Weygand, D P; Wood, M H; Yegneswaran, A; Zana, L; Zhang, J

    Physical review letters, 08/2006, Letnik: 97, Številka: 7
    Journal Article

    The longitudinal target-spin asymmetry AUL for the exclusive electroproduction of high-energy photons was measured for the first time in ep-->e;'pgamma. The data have been accumulated at JLab with the CLAS spectrometer using 5.7 GeV electrons and a longitudinally polarized NH3 target. A significant azimuthal angular dependence was observed, resulting from the interference of the deeply virtual Compton scattering and Bethe-Heitler processes. The amplitude of the sinvarphi moment is 0.252+/-0.042stat+/-0.020sys. Theoretical calculations are in good agreement with the magnitude and the kinematic dependence of the target-spin asymmetry, which is sensitive to the generalized parton distributions H and H.