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  • Observation of the naive-T-...
    Akopov, N; Akopov, Z; Aschenauer, E C; Augustyniak, W; Avetisyan, E; Ball, B; Böttcher, H; Bonomo, C; Borissov, A; Bryzgalov, V; Burns, J; Capiluppi, M; Capitani, G P; Cisbani, E; Ciullo, G; Contalbrigo, M; Deconinck, W; De Leo, R; De Nardo, L; De Sanctis, E; Diefenthaler, M; Dreschler, J; Ehrenfried, M; Elbakian, G; Elschenbroich, U; Fabbri, R; Fantoni, A; Felawka, L; Frullani, S; Gabbert, D; Gapienko, V; Garibaldi, F; Giordano, F; Hartig, M; Hasch, D; Hill, G; Hoek, M; Holler, Y; Ivanilov, A; Jackson, H E; Jo, H S; Joosten, S; Keri, T; Kisselev, A; Kozlov, V; Kravchenko, P; Lagamba, L; Lehmann, I; Lenisa, P; Linden-Levy, L A; López Ruiz, A; Lorenzon, W; Lu, X-R; Ma, B-Q; Mahon, D; Makins, N C R; Manaenkov, S I; Manfré, L; Marianski, B; Martinez de la Ossa, A; Marukyan, H; Miller, C A; Miyachi, Y; Murray, M; Mussgiller, A; Nappi, E; Negodaev, M; Nowak, W-D; Pappalardo, L L; Perez-Benito, R; Reimer, P E; Reolon, A R; Riedl, C; Rith, K; Rostomyan, A; Sanftl, F; Schäfer, A; Schüler, K P; Shutov, V; Stancari, M; Statera, M; Steijger, J J M; Stinzing, F; Terkulov, A; Trzcinski, A; Tytgat, M; van der Nat, P B; Van Haarlem, Y; Van Hulse, C; Veretennikov, D; Vogel, C; Wang, S; Yaschenko, S; Ye, H; Ye, Z; Yen, S; Yu, W; Zeiler, D; Zihlmann, B; Zupranski, P

    Physical review letters, 10/2009, Letnik: 103, Številka: 15
    Journal Article

    Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd, transverse-momentum-dependent parton distribution function is deduced from nonvanishing Sivers effects for pi(+), pi(0), and K(+/-), as well as in the difference of the pi(+) and pi(-) cross sections.