Transverse target single-spin asymmetry in inclusive electroproduction of charged pions and kaons

Single-spin asymmetries were investigated in inclusive electroproduction of charged pions and kaons from transversely polarized protons at the HERMES experiment. The asymmetries were studied as a function of the azimuthal angle psi about the beam direction between the target-spin direction and the h...

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Detalhes bibliográficos
Autores: Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E.C., Augustynia, W., Avakian, R., Avetissian, A., Avetisyan, E., Belostotski, S., Bianchi, N., Blok, H.P., 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., Dürenn, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Fabbri, R., Fantoni, A., Felawka, L., Frullani, S., Gabberth, D., Gapienko, G., Gapienko, V., Gavrilov, G., Gharibyan, V., Giordano, F., Gliske, S., Golembiovskaya, M., Hadjidakis, C., Hartig, M., Hasch, D., Hillenbrand, A., Hoek, M., Holler, Y., Hristova, I., Ivanilov, A., Jackson, H.E., Joosten, S., Kaiser, R., Karyan, G., Keri, T., Kinney, E., Kisselev, A., Korotkov, V., Kozlov, V., Kravchenko, P., Krivokhijine, V.G., Lagamba, L., Lapikás, L., Lehmann, I., Lenisa, P., López Ruiz, A., Lorenzon, W., Ma, B.-Q., Mahon, D., Makins, N.C.R., Manaenkov, S.I., Mao, Y., Marianski, B., Martínez de la Ossa, A., Marukyan, H., Miller, C.A., Miyachi, Y., Movsisyan, A., Murray, M., Mussgiller, A., Nappi, E., Naryshkin, Y., Negodaev, M., Nowak, W.-D., Pappalardo, L.L., Perez-Benito, R., Petrosyan, A., Raithel, M., Reimer, P.E., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanftl, F., Schäferv, A., Schnell, Gunar, Seitz, B., Shibata, T.-A., Shutov, V., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stewart, J., Stinzing, F., Taroian, S., Terkulov, A., Truty, R., Trzcinski, A., Tytgat, M., Van Haarlem, Y., Van Hulse, Charlotte Barbara, Veretennikov, Denis, Vikhrov, V., Vilardi, I., Wang, S., Yaschenko, S., Ye, Z., Yen, S., Yu, W., Zagrebelnyy, V., Zeiler, D., Zihlmann, V., Zupranski, P.
Formato: artículo
Fecha de publicación:2014
País:España
Recursos:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/17467
Acesso em linha:http://hdl.handle.net/10810/17467
Access Level:acceso abierto
Palavra-chave:deep-inelastic scattering
polarized proton-beam
chiral-odd contibution
sivers asymmetries
analizing power
200 GEV/C
PI(0) production
hard scattering
cross-sections
arrow-p
PHYSICS, NUCLEAR
Descrição
Resumo:Single-spin asymmetries were investigated in inclusive electroproduction of charged pions and kaons from transversely polarized protons at the HERMES experiment. The asymmetries were studied as a function of the azimuthal angle psi about the beam direction between the target-spin direction and the hadron production plane, the transverse hadron momentum P-T relative to the direction of the incident beam, and the Feynman variable x(F). The sin psi* amplitudes are positive for pi(+) and K+ slightly negative for pi(-) and consistent with zero for K-, with particular P-T but weak x(F) dependences. Especially large asymmetries are observed for two small subsamples of events, where also the scattered electron was recorded by the spectrometer. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

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