Single-spin azimuthal asymmetry in exclusive electroproduction of + mesons Academic Article uri icon

abstract

  • A single-spin asymmetry in the distribution of exclusively produced + mesons azimuthally around the virtual photon direction relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off longitudinally polarized protons. Integrated over the experimental acceptance, the sin moment of the polarization asymmetry of the cross section is measured to be -0.18 0.05(stat.) 0.02(syst.). The asymmetry is also studied as a function of the relevant kinematic variables, and its magnitude is found to grow with decreasing x and increasing -t and vanish at t t min (where x is the Bjorken scaling variable and t is the squared four-momentum transferred to the nucleon). 2002 Elsevier Science B.V. All rights reserved.

published proceedings

  • PHYSICS LETTERS B

author list (cited authors)

  • Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E. C., Avakian, H., ... Zohrabian, H.

citation count

  • 29

complete list of authors

  • Airapetian, A||Akopov, N||Akopov, Z||Amarian, M||Aschenauer, EC||Avakian, H||Avakian, R||Avetissian, A||Avetissian, E||Bailey, P||Baturin, V||Baumgarten, C||Beckmann, M||Belostotski, S||Bernreuther, S||Bianchi, N||Böttcher, H||Borissov, A||Bouhali, O||Bouwhuis, M||Brack, J||Brauksiepe, S||Brüll, A||Brunn, I||Bulten, HJ||Capitani, GP||Chumney, P||Cisbani, E||Ciullo, G||Court, GR||Dalpiaz, PF||De Leo, R||De Nardo, L||De Sanctis, E||De Schepper, D||Devitsin, E||Huberts, PKAD||Di Nezza, P||Düren, M||Ehrenfried, M||Elbakian, G||Ellinghaus, F||Ely, J||Fabbri, R||Fantoni, A||Fechtchenko, A||Felawka, L||Filippone, BW||Fischer, H||Fox, B||Franz, J||Frullani, S||Gärber, Y||Garibaldi, F||Garutti, E||Gavrilov, G||Gharibyan, V||Graw, G||Grebeniouk, O||Green, PW||Greeniaus, LG||Gute, A||Haeberli, W||Hafidi, K||Hartig, M||Hasch, D||Heesbeen, D||Heinsius, FH||Henoch, M||Hertenberger, R||Hesselink, WHA||Hofman, G||Holler, Y||Holt, RJ||Hommez, B||Iarygin, G||Izotov, A||Jackson, HE||Jgoun, A||Jung, P||Kaiser, R||Kisselev, A||Kitching, P||Königsmann, K||Kolster, H||Korotkov, V||Kotik, E||Kozlov, V||Krauss, B||Krivokhijine, VG||Kyle, G||Lagamba, L||Laziev, A||Lenisa, P||Liebing, P||Lindemann, T||Lorenzon, W||Maas, A||Makins, NCR||Marukyan, H||Masoli, F||McIlhany, K||Meissner, F||Menden, F||Mexner, V||Meyners, N||Mikloukho, O||Milner, R||Muccifora, V||Nagaitsev, A||Nappi, E||Naryshkin, Y||Nass, A||Negodaeva, K||Nowak, WD||Oganessyan, K||O'Neill, TG||Owen, BR||Pate, SF||Podiatchev, S||Potashov, S||Potterveld, DH||Raithel, M||Rakness, G||Rappoport, V||Redwine, R||Reggiani, D||Reimer, P||Reolon, AR||Rith, K||Robinson, D||Rostomyan, A||Ryckbosch, D||Sakemi, Y||Sanjiev, I||Sato, F||Savin, I||Scarlett, C||Schäfer, A||Schill, C||Schmidt, F||Schnell, G||Schüler, KP||Schwind, A||Seibert, J||Seitz, B||Shibata, TA||Shutov, V||Simani, MC||Simon, A||Sinram, K||Steffens, E||Steijger, JJM||Stewart, J||Stösslein, U||Suetsugu, K||Taroian, S||Terkulov, A||Tessarin, S||Thomas, E||Tipton, B||Tytgat, M||Urciuoli, GM||van den Brand, JFJ||van der Steenhoven, G||van de Vyver, R||Vetterli, MC||Vikhrov, V||Vincter, MG||Visser, J||Volmer, J||Weiskopf, C||Wendland, J||Wilbert, J||Wise, T||Yen, S||Yoneyama, S||Zohrabian, H

publication date

  • May 2002