DVCS at HERA and at CERN

Details DVCS at HERA and at CERN DVCS at HERA and at CERN

2009-06-15

arxiv.org/abs/0906.2490v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 9 figures, proceedings of Photon09, 11-15 may 2009, DESY, Hamburg, Germany

Scientific paper

Deeply Virtual Compton Scattering (DVCS) in $ep$ collisions has emerged in recent years as a an essential reaction to obtain information on the correlation of partons in the hadron (proton) or on the transverse distribution of these partons. In these proceedings, we examine the lattest data from HERA (at low $x_{Bj}<10^{-2}$) and their impact on models. We analyse in detail what these data imply on the spatial structure of the proton. In particular, the most recent measurements of the Beam Charge Asymmetry by the H1 experiment is discussed in this context. Perspectives are presented for further measurements of DVCS cross sections at CERN, within the COMPASS experiment.

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