1. Azimuthal distributions of charged hadrons, pions, and kaons produced in deep-inelastic scattering off unpolarized protons and deuterons
- Author
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A. Trzcinski, J. Burns, N. C. R. Makins, S. Frullani, A. Hillenbrand, Y. Imazu, K. Rith, Dirk Ryckbosch, Adel Terkulov, V. A. Gapienko, A. Ivanilov, Y. Holler, S. Yen, G. Gapienko, J. Bowles, J. G. Rubin, David Mahon, M. Golembiovskaya, Ralf Kaiser, F. Sanftl, I. Lehmann, Michael Tytgat, E. Cisbani, Andreas Schäfer, A. Movsisyan, C. A. Miller, W. Yu, F. Giordano, Wouter Deconinck, V. Zagrebelnyy, B. Marianski, B. Zihlmann, G. Ciullo, W. Augustyniak, G. Gavrilov, Alexander Borissov, H. E. Jackson, C. Van Hulse, V. G. Krivokhijine, H. P. Blok, T. A. Shibata, M. Statera, R.O. Avakian, A. Airapetian, M. Capiluppi, Arne Vandenbroucke, M. Stancari, Alessandra Fantoni, Y. Naryshkin, W.-D. Nowak, Shan Wang, Wolfgang Lorenzon, D. Zeiler, E. De Sanctis, Franco Garibaldi, P. F. Dalpiaz, L. Manfré, P. E. Reimer, M. Hoek, Ivana Hristova, A. Martinez de la Ossa, A. López Ruiz, D. Veretennikov, Paolo Lenisa, S. Yaschenko, S. Joosten, M. Negodaev, I. Vilardi, V. A. Korotkov, Eugenio Nappi, A. Kisselev, V. Kozlov, Luciano Pappalardo, Y. Van Haarlem, A. Rostomyan, A. R. Reolon, A. Avetissian, Y. J. Mao, P. Kravchenko, L. Lapikás, T. Keri, M. Diefenthaler, A. Nass, H. S. Jo, F. Stinzing, J. Stewart, G. Schnell, M. Contalbrigo, E. Avetisyan, G. Elbakian, S. I. Manaenkov, Martin Raithel, E. C. Aschenauer, R. Perez-Benito, V. Vikhrov, M. Hartig, A. Petrosyan, P. Di Nezza, C. Riedl, Morgan Murray, B. Seitz, D. Hasch, K. P. Schüler, P. Zupranski, G. Rosner, R. Truty, N. Akopov, S. Belostotski, G. Karyan, V. Bryzgalov, Frank Ellinghaus, E. R. Kinney, Y. Salomatin, B. Q. Ma, H. Marukyan, R. De Leo, Stephen V. Gliske, L. Felawka, L. Lagamba, Z. Akopov, L. De Nardo, Zhenyu Ye, V. Gharibyan, J. J. M. Steijger, Michael Düren, Cynthia Marie Hadjidakis, and Y. Miyachi
- Subjects
Drell-Yan process ,HERMES experiment ,generalized parton distribution ,Nuclear Theory ,Hadron ,HERMES ,Parton ,01 natural sciences ,multiple production [charged particle] ,High Energy Physics - Experiment ,HARD-SCATTERING ,High Energy Physics - Experiment (hep-ex) ,semi-inclusive reaction [deep inelastic scattering] ,transverse momentum [parton] ,HERMES EXPERIMENT ,deep inelastic scattering [positron p] ,Collins ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,electroproduction [pi] ,Physics ,FINAL-STATE INTERACTIONS ,ANGULAR-DISTRIBUTIONS ,PARTON-MODEL ,DUAL RADIATOR RICH ,angular dependence ,modulation ,DESY HERA Stor ,SPIN PRODUCTION ASYMMETRIES ,Nucleon ,Quark ,Nuclear and High Energy Physics ,Particle physics ,DRELL-YAN ,FOS: Physical sciences ,Nuclear physics ,angular distribution [charged particle] ,Pion ,0103 physical sciences ,ddc:530 ,PHYSICS EVENT GENERATION ,TRANSVERSE-MOMENTUM ,010306 general physics ,deep inelastic scattering [lepton deuteron] ,27.6 GeV ,010308 nuclear & particles physics ,Scattering ,High Energy Physics::Phenomenology ,polarization [quark] ,Deep inelastic scattering ,Physics and Astronomy ,electroproduction [K] ,deep inelastic scattering [electron p] ,High Energy Physics::Experiment ,experimental results - Abstract
The azimuthal cos{\phi} and cos2{\phi} modulations of the distribution of hadrons produced in unpolarized semi-inclusive deep-inelastic scattering of electrons and positrons off hydrogen and deuterium targets have been measured in the HERMES experiment. For the first time these modulations were determined in a four-dimensional kinematic space for positively and negatively charged pions and kaons separately, as well as for unidentified hadrons. These azimuthal dependences are sensitive to the transverse motion and polarization of the quarks within the nucleon via, e.g., the Cahn, Boer-Mulders and Collins effects.
- Published
- 2013