Double spin asymmetry in exclusive rho^0 muoproduction at COMPASS
High Energy Physics - Experiment
2008-11-26 v2
Abstract
The longitudinal double spin asymmetry A_1^rho for exclusive leptoproduction of rho^0 mesons, mu + N -> mu + N + rho, is studied using the COMPASS 2002 and 2003 data. The measured reaction is incoherent exclusive rho^0 production on polarised deuterons. The Q^2 and x dependence of A_1^rho is presented in a wide kinematical range: 3x10^-3 < Q^2 < 7 (GeV/c)^2 and 5x10^-5 < x < 0.05. The presented results are the first measurements of A_1^rho at small Q2 (Q2 < 0.1 (GeV/c)^2) and small x (x < 3x10^-3). The asymmetry is in general compatible with zero in the whole kinematical range.
Keywords
Cite
@article{arxiv.0704.1863,
title = {Double spin asymmetry in exclusive rho^0 muoproduction at COMPASS},
author = {COMPASS Collaboration and M. Alekseev},
journal= {arXiv preprint arXiv:0704.1863},
year = {2008}
}
Comments
6 Figures, 15 pages, version 2 with updated author list, technical latex problem fixed