TMD PDF's: gauge invariance, RG properties and Wilson lines
High Energy Physics - Phenomenology
2009-11-13 v2
Abstract
The UV divergences associated with transverse-momentum dependent (TMD) parton distribution functions (PDF) are calculated together with the ensuing one-loop anomalous dimensions in the light-cone gauge. Time-reversal-odd effects in the anomalous dimensions are observed and the role of Glauber gluons is discussed. A generalized renormalization procedure of TMD PDFs is proposed, relying upon the renormalization of contour-dependent operators with obstructions.
Cite
@article{arxiv.0811.0969,
title = {TMD PDF's: gauge invariance, RG properties and Wilson lines},
author = {I. O. Cherednikov and N. G. Stefanis},
journal= {arXiv preprint arXiv:0811.0969},
year = {2009}
}
Comments
4 pages, 1 figure. Talk presented at the International Workshop on Diffraction in High Energy and Nuclear Physics, La Londe-les-Maures, France, 9-14 Sept 2008. v2: 5 pages, preprint number and e-mail addresses added