Key features of the TMD soft-factor structure
High Energy Physics - Phenomenology
2014-04-08 v2
Abstract
We show that the geometry of the Wilson lines, entering the operator definition of the transverse-momentum dependent parton distributions and that of the soft factor, follows from the kinematics of the underlying physical process in conjunction with the gauge invariance of the QCD Lagrangian. We demonstrate our method in terms of concrete examples and determine the paths of the associated Wilson lines. The validation of the factorization theorem in our approach is postponed to future work.
Cite
@article{arxiv.1401.3663,
title = {Key features of the TMD soft-factor structure},
author = {A. A. Vladimirov and N. G. Stefanis},
journal= {arXiv preprint arXiv:1401.3663},
year = {2014}
}
Comments
10 pages, 2 figures. Invited contribution presented by the first author at the Lightcone 2013+ Conference, Skiathos, Greece, 20-24 May, 2013. Matches version to appear in Few Body Systems