Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2008 Apr 25;100(16):162002.
doi: 10.1103/PhysRevLett.100.162002. Epub 2008 Apr 23.

Measurement of deeply virtual compton scattering beam-spin asymmetries

F X Girod  1 , R A Niyazov, H Avakian, J Ball, I Bedlinskiy, V D Burkert, R De Masi, L Elouadrhiri, M Garçon, M Guidal, H S Jo, K Joo, V Kubarovsky, S V Kuleshov, M MacCormick, S Niccolai, O Pogorelko, F Sabatié, S Stepanyan, P Stoler, M Ungaro, B Zhao, M J Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Bagdasaryan, N Baillie, J P Ball, N A Baltzell, V Batourine, M Battaglieri, M Bellis, N Benmouna, B L Berman, A S Biselli, L Blaszczyk, S Bouchigny, S Boiarinov, R Bradford, D Branford, W J Briscoe, W K Brooks, S Bültmann, C Butuceanu, J R Calarco, S L Careccia, D S Carman, L Casey, S Chen, L Cheng, P L Cole, P Collins, P Coltharp, D Crabb, V Crede, N Dashyan, E De Sanctis, R De Vita, P V Degtyarenko, A Deur, K V Dharmawardane, R Dickson, C Djalali, G E Dodge, J Donnelly, D Doughty, M Dugger, O P Dzyubak, H Egiyan, K S Egiyan, L El Fassi, P Eugenio, G Fedotov, G Feldman, H Funsten, G Gavalian, G P Gilfoyle, K L Giovanetti, J T Goetz, A Gonenc, R W Gothe, K A Griffioen, N Guler, L Guo, V Gyurjyan, K Hafidi, H Hakobyan, C Hanretty, F W Hersman, K Hicks, I Hleiqawi, M Holtrop, C E Hyde, Y Ilieva, D G Ireland, B S Ishkhanov, E L Isupov, M M Ito, D Jenkins, J R Johnstone, H G Juengst, N Kalantarians, J D Kellie, M Khandaker, W Kim, A Klein, F J Klein, A V Klimenko, M Kossov, Z Krahn, L H Kramer, J Kuhn, S E Kuhn, J Lachniet, J M Laget, J Langheinrich, D Lawrence, T Lee, K Livingston, H Y Lu, N Markov, P Mattione, M Mazouz, B McKinnon, B A Mecking, M D Mestayer, C A Meyer, T Mibe, B Michel, K Mikhailov, M Mirazita, R Miskimen, V Mokeev, K Moriya, S A Morrow, M Moteabbed, E Munevar, G S Mutchler, P Nadel-Turonski, R Nasseripour, G Niculescu, I Niculescu, B B Niczyporuk, M R Niroula, M Nozar, M Osipenko, A I Ostrovidov, K Park, E Pasyuk, C Paterson, S Anefalos Pereira, J Pierce, N Pivnyuk, D Pocanic, S Pozdniakov, J W Price, S Procureur, Y Prok, D Protopopescu, B A Raue, G Ricco, M Ripani, B G Ritchie, G Rosner, P Rossi, J Salamanca, C Salgado, J P Santoro, V Sapunenko, R A Schumacher, V S Serov, Y G Sharabian, D Sharov, N V Shvedunov, E S Smith, L C Smith, D I Sober, D Sokhan, A Stavinsky, S S Stepanyan, B E Stokes, I I Strakovsky, S Strauch, M Taiuti, D J Tedeschi, A Tkabladze, S Tkachenko, C Tur, M F Vineyard, A V Vlassov, E Voutier, D P Watts, L B Weinstein, D P Weygand, M Williams, E Wolin, M H Wood, A Yegneswaran, L Zana, J Zhang, Z W Zhao; CLAS Collaboration
Affiliations
Free article

Measurement of deeply virtual compton scattering beam-spin asymmetries

F X Girod et al. Phys Rev Lett. .
Free article

Abstract

The beam-spin asymmetries in the hard exclusive electroproduction of photons on the proton (e p-->epgamma) were measured over a wide kinematic range and with high statistical accuracy. These asymmetries result from the interference of the Bethe-Heitler process and of deeply virtual Compton scattering. Over the whole kinematic range (x(B) from 0.11 to 0.58, Q2 from 1 to 4.8 GeV2, -t from 0.09 to 1.8 GeV2), the azimuthal dependence of the asymmetries is compatible with expectations from leading-twist dominance, A approximately a sinphi/(1+c cosphi). This extensive set of data can thus be used to constrain significantly the generalized parton distributions of the nucleon in the valence quark sector.

PubMed Disclaimer

Publication types

LinkOut - more resources