A high-statistics measurement of transverse spin effects in dihadron production from muon–proton semi-inclusive deep-inelastic scattering

0431897 - ÚPT 2015 RIV NL eng J - Journal Article
Adolph, C. - Akhunzyanov, R. - Alekseev, M. - Alexakhin, V. Yu. - Alexandrov, Yu. - Alexeev, G. D. - Amoroso, A. - Andrieux, V. - Anosov, V. A. - Austregisilio, A. - Badelek, B. - Balestra, F. - Barth, J. - Baum, G. - Beck, R. - Bedfer, Y. - Berlin, A. - Bernhard, J. - Bertini, R. - Bicker, K. - Bieling, J. - Birsa, R. - Bisplinghoff, J. - Bodlak, M. - Boer, M. - Bordalo, P. - Bradamante, F. - Braun, C. - Bravar, A. - Bressan, A. - Büchele, M. - Burtin, E. - Capozza, L. - Chiosso, M. - Chung, S.U. - Cicuttin, A. - Crespo, M. - Curiel, Q. - Dalla Torre, S. - Dasgupta, S. S. - Dasgupta, S. - Denisov, O. - Donskov, S. - Doshita, N. - Duic, V. - Dünnweber, W. - Dziewiecki, M. - Efremov, A.V. - Elia, C. - Eversheim, P. - Eyrich, W. - Faessler, M. - Ferrero, A. - Filin, A. - Finger, M. - Finger jr., M. - Fischer, H. - Franco, C. - Fresne von Hohenesche, N. - Friedrich, J. - Frolov, V. - Garfagnini, R. - Gautheron, F. - Gavrichtchouk, O. - Gerassimov, S. - Geyer, R. - Giorgi, M. - Gnesi, I. - Gobbo, B. - Goertz, S. - Gorzellik, M. - Grabmüller, S. - Grasso, A. - Grube, B. - Guskov, A. - Guthörl, T. - Haas, F. - von Harrach, D. - Hahne, D. - Hashimoto, R. - Heinsius, F. - Herrmann, F. - Hinterberger, F. - Höppner, Ch. - Horikawa, N. - d'Hose, N. - Huber, S. - Ishimoto, S. - Ivanov, A. - Ivanshin, Yu. - Iwata, T. - Jahn, R. - Jary, V. - Jasinski, P. - Joerg, P. - Joosten, R. - Kabuss, E. - Kang, D. - Ketzer, B. - Khaustov, G. - Khokhlov, Y. - Kisselev, Y. - Klein, F. - Klimaszewski, K. - Koivuniemi, J. - Kolosov, V. - Kondo, K. - Königsmann, K. - Konorov, I. - Konstantinov, V. - Kotzinian, A. - Kouznetsov, O. - Král, Z. - Krämer, M. - Kroumchtein, Z. - Kuchinski, N. - Kunne, F. - Kurek, K. - Kurjata, R. P. - Lednev, A. - Lehmann, A. - Levorato, S. - Lichtenstadt, J. - Maggiora, A. - Magnon, A. - Makke, N. - Mallot, G. - Marchand, C. - Martin, A. - Marzec, J. - Matoušek, J. - Matsuda, H. - Matsuda, T. - Meshcheryakov, G. - Meyer, W. - Michigami, T. - Mikhailov, Y. - Miyachi, Y. - Nagaytsev, A. - Nagel, T. - Nerling, F. - Neubert, S. - Neyret, D. - Nikolaenko, V. - Nový, J. - Nowak, W. D. - Nunes, A.S. - Orlov, I. - Olshevsky, A. - Ostrick, M. - Panknin, R. - Panzieri, D. - Parsamyan, B. - Paul, S. - Pešek, M. - Peshekhonov, D. - Piragino, G. - Platchkov, S. - Pochodzalla, J. - Polak, J. - Polyakov, V. - Pretz, J. - Quaresma, M. - Quintans, C. - Ramos, S. - Reicherz, G. - Rocco, E. - Rodionov, V. K. - Rondio, E. - Rychter, A. - Rossiyskaya, N. S. - Ryabchikov, D. - Samoylenko, V. - Sandacz, A. - Sarkar, S. - Savin, I. - Sbrizzai, G. - Schiavon, P. - Schill, C. - Schlütter, T. - Schmidt, A. - Schmidt, K. - Schmiden, H. - Schmitt, L. - Schönning, K. - Schopferer, S. - Schott, M. - Shevchenko, O. - Silva, L. - Sinha, L. - Sirtl, S. - Slunecka, M. - Sosio, S. - Sozzi, F. - Srnka, Aleš - Steiger, L. - Stolarski, M. - Sulc, M. - Sulej, R. - Suzuki, H. - Szabelski, A. - Szameitat, T. - Sznajder, P. - Takekawa, S. - Ter Wolbeek, J. - Tessaro, S. - Tessarotto, F. - Thibaud, F. - Uhl, S. - Uman, I. - Vandenbroucke, M. - Virius, M. - Vondra, J. - Wang, L. - Weisrock, T. - Wilfert, M. - Windmolders, R. - Wislicki, W. - Wollny, H. - Zaremba, K. - Zavertyaev, M. - Zemlyanichkina, E. - Ziembicki, M.
A high-statistics measurement of transverse spin effects in dihadron production from muon–proton semi-inclusive deep-inelastic scattering.
Physics Letters. B. Roč. 736, 7 SEPT (2014), s. 124-131. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT(CZ) LO1212
Keywords : dihadron production * azimuthal asymmetry * transversely polarised target
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 6.131, year: 2014

A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH3) targets is presented. They provide independent access to the transversity distribution functions through the measurement of the Collins asymmetry in single hadron production. The data were taken in the year 2010 with the COMPASS spectrometer using a 160 GeV/c muon beam of the CERN SPS, increasing by a factor of about four the overall statistics with respect to the previously published data taken in the year 2007. The measured sizeable asymmetry is in good agreement with the published data. An approximate equality of the Collins asymmetry and the dihadron asymmetry is observed, suggesting a common physical mechanism in the underlying fragmentation.
Permanent Link: http://hdl.handle.net/11104/0236426