Possible measurements of GPDs at COMPASS

d'Hose, N.; Burtin, E.; Guichon, P. A. M.; Marroncle, J.; Moinester, M.; Pochodzalla, J.; Sandacz, A.

Possible measurements of GPDs at COMPASS

Authors

Description

This paper presents the reactions which can be performed at COMPASS to study the Generalized Parton Distributions (GPDs). The high energy muon beam at CERN allows to measure Hard Exclusive Meson Production or Deeply Virtual Compton Scattering (DVCS) in the Bjorken regime in a large range of Q^2 and x_Bj (1.5<Q^2<7.5 GeV^2 and 0.03<x_Bj<0.25). Exploratory measurements dedicated to rho_0 or pi_0 production can be investigated with the present setup. DVCS measurement require an upgrade of the COMPASS setup.
20 pages, 9 figures