COMPASS - a facility to study QCD

Abstract

An overview on the new COMPASS II experimental programme is presented. The main topics include a study of Primakoff reactions, generalised parton distributions via deeply virtual Compton scattering and transverse momentum dependent distributions in Drell-Yan processes in the pion scattering off polarised protons. Moreover, the studies of semi-inclusive deep inelastic scattering on unpolarised target will be continued.Comment: 4 pages, 2 figures, LaTeX, Contribution to Hadron2011 Conference Proceedings, to appear in the proceedings of the XIV International Conference on Hadron Spectroscopy: Hadron 2011, Munich, Germany, 13-17 June 201