Eur. Phys. J. A (2004) 19: 47-53
https://doi.org/10.1140/epjad/s2004-03-008-x

The structure of hadrons

Feasibility study of deeply virtual compton scattering using COMPASS at CERN

CEA-Saclay, SPhN-DAPNIA-DSM, F91191 Gif-sur-Yvette Cedex, France

Received: 5 August 2003
Published online: 12 February 2004

Abstract

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 ρ ⁰ or π ⁰ production can be investigated with the present setup. DVCS measurement require an upgrade of the COMPASS setup.