Journal article
Authors list: Airapetian, A; Akopov, N; Akopov, Z; Amarian, M; Andrus, A; Aschenauer, EC; Augustyniak, W; Avakian, R; Avetissian, A; Avetissian, E; Bacchetta, A; Bailey, P; Balin, D; Beckmann, M; Belostotski, S; Bianchi, N; Blok, HP; Böttcher, H; Borissov, A; Borysenko, A; Bouwhuis, M; Brüll, A; Bryzgalov, V; Capitani, GP; Cappiluppi, M; Chen, T; Ciullo, G; Contalbrigo, M; Dalpiaz, PF; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Devitsin, E; Di Nezza, P; Düren, M; Ehrenfried, M; Elalaoui-Moulay, A; Elbakian, G; Ellinghaus, F; Elschenbroich, U; Fabbri, R; Fantoni, A; Fechtchenko, A; Felawka, L; Frullani, S; Gapienko, G; Gapienko, V; Garibaldi, F; Garrow, K; Gavrilov, G; Gharibyan, V; Grebeniouk, O; Gregor, IM; Hadjidakis, C; Hafidi, K; Hartig, M; Hasch, D; Henoch, M; Hesselink, WHA; Hillenbrand, A; Hoek, M; Holler, Y; Hommez, B; Hristova, I; Iarygin, G; Ilyichev, A; Ivanilov, A; Izotov, A; Jackson, HE; Jgoun, A; Kaiser, R; Kinney, E; Kisselev, A; Kobayashi, T; Kopytin, M; Korotkov, V; Kozlov, V; Krauss, B; Krivokhijine, VG; Lagamba, L; Lapikás, L; Laziev, A; Lenisa, P; Liebing, P; Linden-Levy, LA; Lorenzon, W; Lu, H; Lu, J; Lu, S; Ma, BQ; Maiheu, B; Makins, NCR; Mao, Y; Marianski, B; Marukyan, H; Masoli, F; Mexner, V; Meyners, N; Michler, T; Mikloukho, O; Miller, CA; Miyachi, Y; Muccifora, V; Nagaitsev, A; Nappi, E; Naryshkin, Y; Nass, A; Negodaev, M; Nowak, WD; Oganessyan, K; Ohsuga, H; Osborne, A; Pickert, N; Potterveld, DH; Raithel, M; Reggiani, D; Reimer, PE; Reischl, A; Reolon, AR; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanjiev, I; Savin, I; Schäfer, A; Schill, C; Schnell, G; Schüler, KP; Seele, J; Seidl, R; Seitz, B; Shanidze, R; Shearer, C; Shibata, TA; Shutov, V; Sinram, K; Sommer, W; Stancari, M; Statera, M; Steffens, E; Steijger, JJM; Stenzel, H; Stewart, J; Stinzing, F; Tait, P; Tanaka, H; Taroian, S; Tchuiko, B; Terkulov, A; Trzcinski, A; Tytgat, M; Vandenbroucke, A; van der Nat, PB; van der Steenhoven, G; van Haarlem, Y; Vetterli, MC; Vikhrov, V; Vincter, MG; Vogel, C; Volmer, J; Wang, S; Wendland, J; Wilbert, J; Smit, GY; Ye, Y; Ye, Z; Yen, S; Zihlmann, B; Zupranski, P
Publication year: 2005
Journal: Physical Review Letters
Volume number: 94
Issue number: 1
ISSN: 0031-9007
eISSN: 1079-7114
DOI Link: https://doi.org/10.1103/PhysRevLett.94.012002
Publisher: American Physical Society
Abstract:
Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (phi) and the target spin axis (phi(S)) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component (pi)(UT) is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component (pi)(UT) arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.
Citation Styles
Harvard Citation style: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E., et al. (2005) Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target -: art. no. 012002, Physical Review Letters, 94(1), Article 012002. https://doi.org/10.1103/PhysRevLett.94.012002
APA Citation style: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bacchetta, A., Bailey, P., Balin, D., Beckmann, M., Belostotski, S., Bianchi, N., Blok, H., Böttcher, H., Borissov, A., ...Zupranski, P. (2005). Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target -: art. no. 012002. Physical Review Letters. 94(1), Article 012002. https://doi.org/10.1103/PhysRevLett.94.012002
Keywords
AZIMUTHAL ASYMMETRIES; DRELL-YAN; FINAL-STATE INTERACTIONS; GAUGE; PARTON DISTRIBUTIONS; QUARKS; SIDIS
