DVCS via color dipoles: Nonperturbative effects
High Energy Physics - Phenomenology
2009-04-23 v2
Abstract
We study the DVCS amplitude within the color dipole approach. The light-cone wave function of a real photon is evaluated in the instanton vacuum model. Our parameter free calculations are able to describe H1 data, both the absolute values and the -dependences, at medium-high values of . The dependence is found to be sensitive to the choice of the phenomenological cross section fitted to DIS data.
Keywords
Cite
@article{arxiv.0812.3992,
title = {DVCS via color dipoles: Nonperturbative effects},
author = {B. Z. Kopeliovich and Ivan Schmidt and M. Siddikov},
journal= {arXiv preprint arXiv:0812.3992},
year = {2009}
}
Comments
11 pages; references added, bibliographic inaccuracy corrected