Finite-t and target mass corrections to DVCS on a scalar target
High Energy Physics - Phenomenology
2014-10-21 v1
Abstract
Using the formalism developed in [1,2] we carry out the first complete calculation of kinematic power corrections to the helicity amplitudes of deeply-virtual Compton scattering to the twist-four accuracy for a study case of a (pseudo)scalar target. Our main result is that both finite-t, ~t/Q^2, and target mass, ~m^2/Q^2, twist-four kinematic power corrections turn out to be factorizable, at least to the leading order in the strong coupling. The structure of these corrections is discussed and a short model study of their numerical impact is presented.
Keywords
Cite
@article{arxiv.1205.3332,
title = {Finite-t and target mass corrections to DVCS on a scalar target},
author = {V. M. Braun and A. N. Manashov and B. Pirnay},
journal= {arXiv preprint arXiv:1205.3332},
year = {2014}
}
Comments
17 pages, 2 figures