Evolution of transverse-momentum-dependent densities
High Energy Physics - Phenomenology
2011-04-04 v1
Abstract
We discuss different operator definitions of the transverse-momentum dependent (TMD) parton densities from the point of view of their renormalization-group (RG) properties and UV evolution. We also consider the structure of the gauge links (Wilson lines) in these operator definitions and examine the role of the soft factor in the factorization formula within the TMD approach to semi-inclusive processes.
Keywords
Cite
@article{arxiv.1104.0168,
title = {Evolution of transverse-momentum-dependent densities},
author = {I. O. Cherednikov and N. G. Stefanis},
journal= {arXiv preprint arXiv:1104.0168},
year = {2011}
}
Comments
4 pages. Invited talk presented at the INT Program "Gluons and the quark sea at high energies: distributions, polarization, tomography", 13 Sep - 19 Nov 2010 Seattle (WA), USA