1. Leading-order determination of the gluon polarization from high-p T hadron electroproduction
- Author
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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, Marco, Capitani, G. P., Cisbani, E., Ciullo, G., Contalbrigo, Marco, Ferretti, Paola, Deconinck, W., Leo, R. D., Nardo, L. D., Sanctis, E. D., Diefenthaler, M., Nezza, P. D., 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, Francesca, 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., H. S., Jo, 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, Paolo, Ruiz, A. L., Lorenzon, W., X. G., Lu, X. R., Lu, B. Q., Ma, Mahon, D., Makins, N. C. R., Manaenkov, S. I., Manfre, L., Mao, Y., Marianski, B., de la Ossa, A. M., 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, Luciano Libero, 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, Michelle Dawn, Statera, Marco, Steffens, E., Steijger, J. J. M., Stewart, J., Stinzing, F., Taroian, S., Terkulov, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., Haarlem, Y. V., Hulse, C. V., Varanda, M., Veretennikov, D., Vikhrov, V., Vilardi, I., Wang, S., Yaschenko, S., Ye, H., Ye, Z., Yu, W., Zeiler, D., Zihlmann, B., and Zupranski, P.
- Subjects
Nuclear and High Energy Physics ,Particle physics ,High Energy Physics::Lattice ,Nuclear Theory ,Lepton-Nucleon Scattering ,Hadron ,Monte Carlo method ,FOS: Physical sciences ,neutron spin structure ,transverse momentum ,01 natural sciences ,High Energy Physics - Experiment ,NO ,High Energy Physics - Experiment (hep-ex) ,deep inelastic scattering ,0103 physical sciences ,ddc:530 ,Nuclear Experiment ,010306 general physics ,s Hermes experiment ,Lepton-Nucleon Scattering, deep inelastic scattering, neutron spin structure, dependent structure functions, electron storage ring, parton distribution,s Hermes experiment, transverse momentum, proton scattering, EP scattering ,Physics ,electron storage ring ,dependent structure functions ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,EP scattering ,HERA ,Polarization (waves) ,parton distribution ,Gluon ,Deuterium ,proton scattering ,Transverse momentum ,High Energy Physics::Experiment ,Nucleon - Abstract
Longitudinal double-spin asymmetries of charged hadrons with high transverse momentum $p_T$ have been measured in electroproduction using the \hermes\ detector at \hera. Processes involving gluons in the nucleon have been enhanced relative to others by selecting hadrons with $p_T$ typically above 1 GeV. In this kinematic domain the gluon polarization has been extracted in leading order making use of the model embedded in the Monte Carlo Generator \Pythia\ 6.2. The gluon polarization obtained from single inclusive hadrons in the $p_T$ range 1 GeV $< p_T
- Published
- 2010
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