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Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive $��^0$ production

Authors :
Aghasyan, M.
Avakian, H.
Rossi, P.
De Sanctis, E.
Hasch, D.
Mirazita, M.
Adikaram, D.
Amaryan, M. J.
Anghinolfi, M.
Baghdasaryan, H.
Ball, J.
Battaglieri, M.
Batourine, V.
Bedlinskiy, I.
Bennett, R. P.
Biselli, A. S.
Branford, D.
Briscoe, W. J.
B��ltmann, S.
Burkert, V. D.
Carman, D. S.
Chandavar, S.
Cole, P. L.
Collins, P.
Contalbrigo, M.
Crede, V.
D'Angelo, A.
Daniel, A.
Dashyan, N.
De Vita, R.
Deur, A.
Dey, B.
Dickson, R.
Djalali, C.
Dodge, G. E.
Doughty, D.
Dupre, R.
Egiyan, H.
Alaoui, A. El
Elouadrhiri, L.
Eugenio, P.
Fedotov, G.
Fegan, S.
Fradi, A.
Gabrielyan, M. Y.
Gar��on, M.
Gevorgyan, N.
Gilfoyle, G. P.
Giovanetti, K. L.
Girod, F. X.
Goetz, J. T.
Gohn, W.
Golovatch, E.
Gothe, R. W.
Graham, L.
Griffioen, K. A.
Guegan, B.
Guidal, M.
Guler, N.
Guo, L.
Hafidi, K.
Hanretty, C.
Hicks, K.
Holtrop, M.
Hyde, C. E.
Ilieva, Y.
Ireland, D. G.
Isupov, E. L.
Jawalkar, S. S.
Jenkins, D.
Jo, H. S.
Joo, K.
Keller, D.
Khandaker, M.
Khetarpal, P.
Kim, A.
Kimy, W.
Klein, A.
Klein, F. J.
Kubarovsky, V.
Kuhn, S. E.
Kuleshov, S. V.
Kuznetsov, V.
Kvaltine, N. D.
Livingston, K.
Lu, H. Y.
MacGregor, I . J . D.
Markov, N.
Mayer, M.
McAndrew, J.
McKinnon, B.
Meyer, C. A.
Micherdzinska, A. M.
Mokeev, V.
Moreno, B.
Moutarde, H.
Munevar, E.
Nadel-Turonski, P.
Ni, A.
Niccolai, S.
Niculescu, G.
Niculescu, I.
Osipenko, M.
Ostrovidov, A. I.
Paolone, M.
Pappalardo, L.
Paremuzyan, R.
Park, K.
Park, S.
Pasyuk, E.
Pereira, S. Anefalos
Phelps, E.
Pisano, S.
Pogorelko, O.
Pozdniakov, S.
Price, J. W.
Procureur, S.
Prok, Y.
Protopopescu, D.
Raue, B. A.
Ricco, G.
Rimal, D.
Ripani, M.
Rosner, G.
Sabati��, F.
Saini, M. S.
Salgado, C.
Schott, D.
Schumacher, R. A.
Seder, E.
Seraydaryan, H.
Sharabian, Y. G.
Smith, G. D.
Sober, D. I.
Stepanyan, S. S.
Stepanyan, S.
Stoler, P.
Strakovsky, I.
Strauch, S.
Taiuti, M.
Tang, W.
Taylor, C. E.
Tkachenko, S.
Ungaro, M.
Voskanyan, H.
Voutier, E.
Watts, D.
Weinstein, L. B.
Weygand, D. P.
Wood, M. H.
Zana, L.
Zhang, J.
Zhao, B.
Zhao, Z. W.
Publication Year :
2011
Publisher :
arXiv, 2011.

Abstract

We present studies of single-spin asymmetries for neutral pion electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized hydrogen target, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. A substantial $\sin ��_h$ amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle $��_h$ of the produced neutral pion. The dependence of this amplitude on Bjorken $x$ and on the pion transverse momentum is extracted with significantly higher precision than previous data and is compared to model calculations.<br />to be submitted PLB

Subjects

Subjects :
High Energy Physics - Experiment (hep-ex)
Nuclear Theory
Physics::Accelerator Physics
FOS: Physical sciences
High Energy Physics::Experiment
Nuclear Experiment

Details

Database :
OpenAIRE
Accession number :
edsair.doi...........ba15b40921fa9a75c911f99e6b4565be
Full Text :
https://doi.org/10.48550/arxiv.1106.2293
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