Genuine twist 3 in exclusive electroproduction of transversely polarized vector mesons
High Energy Physics - Phenomenology
2009-11-07 v2
Abstract
We present the detailed analysis of genuine twist-3 contributions to the exclusive electroproduction amplitude of transversely polarized vector mesons. Using the formalism based on the QCD factorization in the momentum representation we calculated all the genuine twist-3 terms and found the total expression of this amplitude at 1/Q level. Generally speaking, these terms violate standard factorization owing to the existence of the infrared divergencies in the amplitude of hard sub-processes, although the strongest divergencies cancel due to the QCD equations of motion. We discuss the possible treatment of surviving divergencies.
Cite
@article{arxiv.hep-ph/0211028,
title = {Genuine twist 3 in exclusive electroproduction of transversely polarized vector mesons},
author = {I. V. Anikin and O. V. Teryaev},
journal= {arXiv preprint arXiv:hep-ph/0211028},
year = {2009}
}
Comments
14 pages, 6 ps. figures