Deeply Virtual Compton Scattering at HERA II
Abstract
Description
A new measurement is presented of elastic deeply virtual Compton scattering (DVCS) based on data taken by the H1 detector during the complete HERA II period. The data are well described by QCD based calculations. For the first time, a beam charge asymmetry is obtained in a colliding mode, using data recorded in $e^-p$ and $e^+p$. A significant non zero value is measured, related to the interference of QCD and QED processes, namely the DVCS and Bethe-Heitler reactions.
4 pages, 3 figures, prepared for the International Workshop on Deep-Inelastic Scattering and Related Subjets April 16-20, 2007, Munich, Germany
4 pages, 3 figures, prepared for the International Workshop on Deep-Inelastic Scattering and Related Subjets April 16-20, 2007, Munich, Germany