DVCS amplitude in the parton model
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We compute amplitude of deeply virtual Compton scattering in the parton model. We found that the amplitude up to the accuracy O(1/Q) depends on new skewed parton distributions (SPD's). These additional contributions make the DVCS amplitude explicitly transverse.
Keywords
Cite
@article{arxiv.hep-ph/0006321,
title = {DVCS amplitude in the parton model},
author = {M. Penttinen and M. V. Polyakov and A. G. Shuvaev and M. Strikman},
journal= {arXiv preprint arXiv:hep-ph/0006321},
year = {2008}
}
Comments
New spin sum rules for twist-3 SPD's are added. Discussion of 1/Q behaviour of twist-3 contributions is corrected