Observation of the Naive-T-Odd Sivers Effect in Deep-Inelastic Scattering

Airapetian, A. and Akopov, N. and Akopov, Z. and Aschenauer, E. C. and Augustyniak, W. and Avetissian, A. and Avetisyan, E. and Bacchetta, A. and Ball, B. and Bianchi, N. and Blok, H. P. and Boettcher, H. and Bonomo, C. and Borissov, A. and Bryzgalov, V. and Burns, J. and Capiluppi, M. and Capitani, G. P. and Cisbani, E. and Ciullo, G. and Contalbrigo, M. and Dalpiaz, P. F. and Deconinck, W. and De Leo, R. and De Nardo, L. and De Sanctis, E. and Diefenthaler, M. and Di Nezza, P. and Dreschler, J. and Dueren, M. and Ehrenfried, M. and Elbakian, G. and Ellinghaus, F. and Elschenbroich, U. and Fabbri, R. and Fantoni, A. and Felawka, L. and Frullani, S. and Gabbert, D. and Gapienko, G. and Gapienko, V. and Garibaldi, F. and Gharibyan, V. and Giordano, F. and Gliske, S. and Hadjidakis, C. and Hartig, M. and Hasch, D. and Hill, G. and Hillenbrand, A. and Hoek, M. and Holler, Y. and Hristova, I. and Imazu, Y. and Ivanilov, A. and Jackson, H. E. and Jo, H. S. and Joosten, S. and Kaiser, R. and Keri, T. and Kinney, E. and Kisselev, A. and Korotkov, V. and Kozlov, V. and Kravchenko, P. and Lagamba, L. and Lamb, R. and Lapikas, L. and Lehmann, I. and Lenisa, P. and Linden-Levy, L. A. and Ruiz, A. Lopez and Lorenzon, W. and Lu, X. -G. and Lu, X. -R. and Ma, B. -Q. and Mahon, D. and Makins, N. C. R. and Manaenkov, S. I. and Manfre, L. and Mao, Y. and Marianski, B. and de la Ossa, A. Martinez and Marukyan, H. and Miller, C. A. and Miyachi, Y. and Movsisyan, A. and Murray, M. and Mussgiller, A. and Nappi, E. and Naryshkin, Y. and Nass, A. and Negodaev, M. and Nowak, W. -D. and Pappalardo, L. L. and Perez-Benito, R. and Reimer, P. E. and Reolon, A. R. and Riedl, C. and Rith, K. and Rosner, G. and Rostomyan, A. and Rubin, J. and Ryckbosch, D. and Salomatin, Y. and Sanftl, F. and Schaefer, A. and Schnell, G. and Schueler, K. P. and Seitz, B. and Shibata, T. -A. and Shutov, V. and Stancari, M. and Statera, M. and Steijger, J. J. M. and Stenzel, H. and Stewart, J. and Stinzing, F. and Taroian, S. and Terkulov, A. and Trzcinski, A. and Tytgat, M. and Vandenbroucke, A. and van der Nat, P. B. and Van Haarlem, Y. and Van Hulse, C. and Varanda, M. and Veretennikov, D. and Vikhrov, V. and Vilardi, I. and Vogel, C. and Wang, S. and Yaschenko, S. and Ye, H. and Ye, Z. and Yen, S. and Yu, W. and Zeiler, D. and Zihlmann, B. and Zupranski, P. (2009) Observation of the Naive-T-Odd Sivers Effect in Deep-Inelastic Scattering. PHYSICAL REVIEW LETTERS, 103 (15): 152002. ISSN 0031-9007,

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: FINAL-STATE INTERACTIONS; TRANSVERSE-SPIN ASYMMETRIES; PARTON DISTRIBUTIONS; LEPTOPRODUCTION; GAUGE; COLLISIONS; TARGET; RING;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer
Depositing User: Dr. Gernot Deinzer
Date Deposited: 03 Sep 2020 09:32
Last Modified: 03 Sep 2020 09:32
URI: https://pred.uni-regensburg.de/id/eprint/28281

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