TMD PDF's: gauge invariance, RG properties and Wilson lines

Details TMD PDF's: gauge invariance, RG properties and Wilson lines TMD PDF's: gauge invariance, RG properties and Wilson lines

2008-11-06

arxiv.org/abs/0811.0969v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure. Talk presented at the International Workshop on Diffraction in High Energy and Nuclear Physics, La Londe-le

Scientific paper

10.1063/1.3122204

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.

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