Bonn 2010 – wissenschaftliches Programm
HK 16.4: Vortrag
Dienstag, 16. März 2010, 15:15–15:30, HG III
A Summary of the recent Results on Deeply Virtual Compton Scattering at the HERMES Experiment — •Dietmar Zeiler — University of Erlangen-Nürnberg
The exclusive leptoproduction of real photons offers an elegant access to the total angular momenta of partons inside the nucleon. At the HERMES experiment Deeply Virtual Compton Scattering off various gaseous targets in either unpolarized, or longitudinally as well as transversely polarized states with longitudinally polarized electron and positron beams has been analyzed. In this presentation the broad variety of measured asymmetry amplitudes extracted from an hydrogen and a deuterium target will be discussed. In summary, the obtained leading-twist asymmetry amplitudes show sizeable magnitudes, while the suppressed contributions are mostly compatible with zero.
This project is funded by the BMBF, project no 06 ER 9065.