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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 phi(h) amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle phi(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.

Aghasyan, M., Avakian, H., Rossi, P., De Sanctis, E., Hasch, D., Mirazita, M., et al. (2011). Precise measurements of beam spin asymmetries in semi-inclusive pi(0) production. PHYSICS LETTERS. SECTION B, 704(5), 397-402 [10.1016/j.physletb.2011.09.044].

Precise measurements of beam spin asymmetries in semi-inclusive pi(0) production

D'ANGELO, ANNALISA;PISANO, SILVIA;
2011-10-25

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 phi(h) amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle phi(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.
25-ott-2011
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
DEEP-INELASTIC SCATTERING; FINAL-STATE INTERACTIONS; PION ELECTROPRODUCTION; PARTON DISTRIBUTIONS; DRELL-YAN; LEPTOPRODUCTION; DEPENDENCE
http://www.sciencedirect.com/science/article/pii/S0370269311011178
Aghasyan, M., Avakian, H., Rossi, P., De Sanctis, E., Hasch, D., Mirazita, M., et al. (2011). Precise measurements of beam spin asymmetries in semi-inclusive pi(0) production. PHYSICS LETTERS. SECTION B, 704(5), 397-402 [10.1016/j.physletb.2011.09.044].
Aghasyan, M; Avakian, H; Rossi, P; De Sanctis, E; Hasch, D; Mirazita, M; Adikaram, D; Amaryan, M; Anghinolfi, M; Baghdasaryan, H; Ball, J; Battaglieri, M; Batourine, V; Bedlinskiy, I; Bennett, R; Biselli, A; Branford, D; Briscoe, W; Bultmann, S; Burkert, V; Carman, D; Chandavar, S; Cole, P; 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; Doughty, D; Dupre, R; Egiyan, H; El Alaoui, A; Elouadrhiri, L; Eugenio, P; Fedotov, G; Fegan, S; Fradi, A; Gabrielyan, M; Garcon, M; Gevorgyan, N; Gilfoyle, G; Giovanetti, K; Girod, F; Goetz, J; Gohn, W; Golovatch, E; Gothe, R; Graham, L; Griffioen, K; Guegan, B; Guidal, M; Guler, N; Guo, L; Hafidi, K; Hanretty, C; Hicks, K; Holtrop, M; Hyde, C; Ilieva, Y; Ireland, D; Isupov, E; Jawalkar, S; Jenkins, D; Jo, H; Joo, K; Keller, D; Khandaker, M; Khetarpal, P; Kim, A; Kim, W; Klein, A; Klein, F; Kubarovsky, V; Kuhn, S; Kuleshov, S; Kuznetsov, V; Kvaltine, N; Livingston, K; Lu, H; Macgregor, I; Markov, N; Mayer, M; Mcandrew, J; Mckinnon, B; Meyer, C; Micherdzinska, A; Mokeev, V; Moreno, B; Moutarde, H; Munevar, E; Nadel Turonski, P; Ni, A; Niccolai, S; Niculescu, G; Niculescu, I; Osipenko, M; Ostrovidov, A; Paolone, M; Pappalardo, L; Paremuzyan, R; Park, K; Park, S; Pasyuk, E; Pereira, S; Phelps, E; Pisano, S; Pogorelko, O; Pozdniakov, S; Price, J; Procureur, S; Prok, Y; Protopopescu, D; Raue, B; Ricco, G; Rimal, D; Ripani, M; Rosner, G; Sabatie, F; Saini, M; Salgado, C; Schott, D; Schumacher, R; Seder, E; Seraydaryan, H; Sharabian, Y; Smith, G; Sober, D; Stepanyan, S; Stepanyan, S; Stoler, P; Strakovsky, I; Strauch, S; Taiuti, M; Tang, W; Taylor, C; Tkachenko, S; Ungaro, M; Voskanyan, H; Voutier, E; Watts, D; Weinstein, L; Weygand, D; Wood, M; Zana, L; Zhang, J; Zhao, B; Zhao, Z
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/39528
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