Deeply virtual compton scattering at HERA and perspectives at CERN

Details Deeply virtual compton scattering at HERA and perspectives at CERN Deeply virtual compton scattering at HERA and perspectives at CERN

2009-06-15

arxiv.org/abs/0906.2464v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 6 figures, proceedings of the XVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2009

Scientific paper

Standard parton distribution functions contain neither information on the correlations between partons nor on their transverse motion, then a vital knowledge about the three dimensional structure of the nucleon is lost. Hard exclusive processes, in particular DVCS, are essential reactions to go beyond this standard picture. In the following, we examine the most recent data from HERA (at low $x_{Bj}<10^{-2}$) and their impact on GPD models. The most recent measurements of the Beam Charge Asymmetry by the H1 experiment is discussed. Perspectives are presented for further measurements of DVCS cross sections at CERN, within the COMPASS experiment.

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