Double spin asymmetry in exclusive ρ0 muoproduction at COMPASS

Journal Article (Journal Article)

The longitudinal double spin asymmetry A1ρ for exclusive leptoproduction of ρ0 mesons, μ+N→μ+N+ρ, is studied using the COMPASS 2002 and 2003 data. The measured reaction is incoherent exclusive ρ0 production on polarised deuterons. The Q2 and x dependence of A1ρ is presented in a wide kinematical range, 3×10-3< 7 (GeV/c)2 and 5×10-5<0.05. The results presented are the first measurements of A1ρ at small Q2 (Q2< 0.1 (GeV/c)2) and small x (x<3×10-3). The asymmetry is in general compatible with zero in the whole kinematical range. © 2007 Springer-Verlag / Società Italiana di Fisica.

Full Text

Duke Authors

Cited Authors

  • Alekseev, M; Alexakhin, VY; Alexandrov, Y; Alexeev, GD; Amoroso, A; Arbuzov, A; Badełek, B; Balestra, F; Ball, J; Baum, G; Barth, J; Bedfer, Y; Bernet, C; Bertini, R; Bettinelli, M; Birsa, R; Bisplinghoff, J; Bordalo, P; Bradamante, F; Bravar, A; Bressan, A; Brona, G; Burtin, E; Bussa, MP; Chapiro, A; Chiosso, M; Cicuttin, A; Colantoni, M; Costa, S; Crespo, ML; D'Hose, N; Dalla Torre, S; Das, S; Dasgupta, SS; De Masi, R; Dedek, N; Denisov, OY; Dhara, L; Diaz, V; Dinkelbach, AM; Donskov, SV; Dorofeev, VA; Doshita, N; Duic, V; Dünnweber, W; Eversheim, PD; Eyrich, W; Fabro, M; Faessler, M; Falaleev, V; Ferrero, A; Ferrero, L; Finger, M; Fischer, H; Franco, C; Franz, J; Friedrich, JM; Frolov, V; Garfagnini, R; Gautheron, F; Gavrichtchouk, OP; Gazda, R; Gerassimov, S; Geyer, R; Giorgi, M; Gobbo, B; Goertz, S; Gorin, AM; Grabmüller, S; Grajek, OA; Grasso, A; Grube, B; Gushterski, R; Guskov, A; Haas, F; Hannappel, J; Von Harrach, D; Hasegawa, T; Heckmann, J; Hedicke, S; Heinsius, FH; Hermann, R; Heß, C; Hinterberger, F; Von Hodenberg, M; Horikawa, N; Horikawa, S; Ilgner, C; Ioukaev, AI; Ishimoto, S; Ivanov, O; Ivanshin, Y; Iwata, T; Jahn, R; Janata, A; Jasinski, P; Joosten, R; Jouravlev, NI; Kabuß, E

Published Date

  • October 1, 2007

Published In

Volume / Issue

  • 52 / 2

Start / End Page

  • 255 - 265

Electronic International Standard Serial Number (EISSN)

  • 1434-6052

International Standard Serial Number (ISSN)

  • 1434-6044

Digital Object Identifier (DOI)

  • 10.1140/epjc/s10052-007-0376-6

Citation Source

  • Scopus