/ Experiment-HEP arXiv:0911.0095


Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on an unpolarized deuterium target


Airapetian, A. ; Akopov, N. ; Akopov, Z. ; Amarian, M. ; Aschenauer, E.C. ; Augustyniak, W. ; Avakian, R. ; Avetissian, A. ; Avetisyan, E. ; Ball, B. ; Belostotski, S. ; Bianchi, N. ; Blok, H.P. ; Bottcher, H. ; Borissov, A. ; Bowles, J. ; Bryzgalov, V. ; Burns, J. ; Capiluppi, M. ; Capitani, G.P. ; Cisbani, E. ; Ciullo, G. ; Contalbrigo, M. ; Dalpiaz, P.F. ; Deconinck, W. ; De Leo, R. ; De Nardo, L. ; De Sanctis, E. ; Diefenthaler, M. ; Di Nezza, P. ; Duren, M. ; Ehrenfried, M. ; Elbakian, G. ; Ellinghaus, F. ; Fabbri, R. ; Fantoni, A. ; Felawka, L. ; Frullani, S. ; Gabbert, D. ; Gapienko, G. ; Gapienko, V. ; Garibaldi, F. ; Gavrilov, G. ; Gharibyan, V. ; Giordano, F. ; Gliske, S. ; Guler, H. ; Guzey, V. ; Haan, S. ; Hadjidakis, C. ; Hartig, M. ; Hasch, D. ; Hill, G. ; Hillenbrand, A. ; Hoek, M. ; Holler, Y. ; Hristova, I. ; Imazu, Y. ; Ivanilov, A. ; Jackson, H.E. ; Jo, H.S. ; Joosten, S. ; Kaiser, R. ; Karyan, G. ; Keri, T. ; Kinney, E. ; Kisselev, A. ; Korotkov, V. ; Kozlov, V. ; Kravchenko, P. ; Lagamba, L. ; Lamb, R. ; Lapikas, L. ; Lehmann, I. ; Lenisa, P. ; Lopez Ruiz, A. ; Lorenzon, W. ; Lu, X.-G. ; Lu, X.-R. ; Ma, B.-Q. ; Mahon, D. ; Makins, N.C.R. ; Manaenkov, S.I. ; Manfre, L. ; Mao, Y. ; Marianski, B. ; Martinez de la Ossa, A. ; Marukyan, H. ; Miller, C.A. ; Miyachi, Y. ; Movsisyan, A. ; Muccifora, V. ; Murray, M. ; Mussgiller, A. ; Nappi, E. ; Naryshkin, Y. ; Nass, A. ; Negodaev, M. ; Nowak, W.-D. ; Pappalardo, L.L. ; Perez-Benito, R. ; Raithel, M. ; Reimer, P.E. ; Reolon, A.R. ; Riedl, C. ; Rith, K. ; Rosner, G. ; Rostomyan, A. ; Rubin, J. ; Ryckbosch, D. ; Salomatin, Y. ; Schafer, A. ; Schnell, G. ; Schuler, K.P. ; Shanidze, R. ; Shibata, T.-A. ; Shutov, V. ; Stancari, M. ; Statera, M. ; Steffens, E. ; Steijger, J.J.M. ; Stewart, J. ; Stinzing, F. ; Taroian, S. ; Terkulov, A. ; Trzcinski, A. ; Tytgat, M. ; Vandenbroucke, A. ; Van Haarlem, Y. ; Van Hulse, C. ; Varanda, M. ; Veretennikov, D. ; Vikhrov, V. ; Vilardi, I. ; Wang, S. ; Yaschenko, S. ; Ye, H. ; Ye, Z. ; Yu, W. ; Zeiler, D. ; Zihlmann, B. ; Zupranski, P.

Published in: Nucl.Phys.
Year: 2010
Vol.: B829
Page No: 1-27
Pages: 27

Abstract: Azimuthal asymmetries in exclusive electroproduction of a real photon from an unpolarized deuterium target are measured with respect to beam helicity and charge. They appear in the distribution of these photons in the azimuthal angle phi around the virtual-photon direction, relative to the lepton scattering plane. The extracted asymmetries are attributed to either the deeply virtual Compton scattering process or its interference with the Bethe-Heitler process. They are compared with earlier results on the proton target. In the measured kinematic region, the beam-charge asymmetry amplitudes and the leading amplitudes of the beam-helicity asymmetries on an unpolarized deuteron target are compatible with the results from unpolarized protons.

Keyword(s): DIS ; HERMES experiment ; GPD ; DVCS ; Deuteron ; Unpolarized deuterium target

Web-Page: http://inspirebeta.net/record/835697/files/fig1.1.png; http://inspirebeta.net/record/835697/files/fig1.2.png; http://inspirebeta.net/record/835697/files/fig10.png; http://inspirebeta.net/record/835697/files/fig11.png; http://inspirebeta.net/record/835697/files/fig2.png; http://inspirebeta.net/record/835697/files/fig3.png; http://inspirebeta.net/record/835697/files/fig4.png; http://inspirebeta.net/record/835697/files/fig5.png; http://inspirebeta.net/record/835697/files/fig6.png; http://inspirebeta.net/record/835697/files/fig7.png; http://inspirebeta.net/record/835697/files/fig8.png; http://inspirebeta.net/record/835697/files/fig9.png

Total numbers of views: 1441
Numbers of unique views: 637
e-proceeding
 Record created 2010-10-29, last modified 2014-01-30


External links:
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)