Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering

Published

Journal Article

First measurements of azimuthal asymmetries in hadron-pair production in deep-inelastic scattering of muons on transversely polarised 6LiD (deuteron) and NH 3 (proton) targets are presented. The data were taken in the years 2002-2004 and 2007 with the COMPASS spectrometer using a muon beam of 160 GeV/c at the CERN SPS. The asymmetries provide access to the transversity distribution functions, without involving the Collins effect as in single hadron production. The sizeable asymmetries measured on the NH 3 target indicate non-vanishing u-quark transversity and two-hadron interference fragmentation functions. The small asymmetries measured on the 6LiD target can be interpreted as indication for a cancellation of u- and d-quark transversities. © 2012 Elsevier B.V.

Full Text

Duke Authors

Cited Authors

  • Adolph, C; Alekseev, MG; Alexakhin, VY; Alexandrov, Y; Alexeev, GD; Amoroso, A; Antonov, AA; Austregesilo, A; BadeĊ‚ek, B; Balestra, F; Barth, J; Baum, G; Bedfer, Y; Bernhard, J; Bertini, R; Bettinelli, M; Bicker, K; Bieling, J; Birsa, R; Bisplinghoff, J; Bordalo, P; Bradamante, F; Braun, C; Bravar, A; Bressan, A; Burtin, E; Chaberny, D; Chiosso, M; Chung, SU; Cicuttin, A; Crespo, ML; Dalla Torre, S; Das, S; Dasgupta, SS; Denisov, OY; Dhara, L; Donskov, SV; Doshita, N; Duic, V; Dünnweber, W; Dziewiecki, M; Efremov, A; Elia, C; Eversheim, PD; Eyrich, W; Faessler, M; Ferrero, A; Filin, A; Finger, M; Finger, J; Fischer, H; Franco, C; du Fresne von Hohenesche, N; Friedrich, JM; Garfagnini, R; Gautheron, F; Gavrichtchouk, OP; Gazda, R; Gerassimov, S; Geyer, R; Giorgi, M; Gnesi, I; Gobbo, B; Goertz, S; Grabmüller, S; Grasso, A; Grube, B; Gushterski, R; Guskov, A; Guthörl, T; Haas, F; von Harrach, D; Heinsius, FH; Herrmann, F; Heß, C; Hinterberger, F; Horikawa, N; Höppner, C; d'Hose, N; Huber, S; Ishimoto, S; Ivanov, O; Ivanshin, Y; Iwata, T; Jahn, R; Jasinski, P; Joosten, R; Kabuß, E; Kang, D; Ketzer, B; Khaustov, GV; Khokhlov, YA; Kisselev, Y; Klein, F; Klimaszewski, K; Koblitz, S; Koivuniemi, JH; Kolosov, VN; Kondo, K; Königsmann, K

Published Date

  • June 18, 2012

Published In

Volume / Issue

  • 713 / 1

Start / End Page

  • 10 - 16

International Standard Serial Number (ISSN)

  • 0370-2693

Digital Object Identifier (DOI)

  • 10.1016/j.physletb.2012.05.015

Citation Source

  • Scopus