Dual parameterization and Abel transform tomography for twist-3 DVCS
High Energy Physics - Phenomenology
2015-05-13 v1
Abstract
We derive dual parameterization for the DVCS amplitude to the twist-3 accuracy. The relation of the dual parameterization to the Abel transform tomography for amplitudes of hard exclusive processes is elaborated. We prove dispersion relations for the twist-3 DVCS amplitude in the Wandzura -- Wilczek approximation and show that the subtraction constant is given by the D-term form factor. The same as in the case of twist-2 DVCS amplitude.
Cite
@article{arxiv.0803.1777,
title = {Dual parameterization and Abel transform tomography for twist-3 DVCS},
author = {Alena M. Moiseeva and Maxim V. Polyakov},
journal= {arXiv preprint arXiv:0803.1777},
year = {2015}
}
Comments
11 pages, 1 eps figure