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arXiv · 0811.0969

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

I. O. Cherednikov·N. G. Stefanis
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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.

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I. O. Cherednikov, N. G. Stefanis. 2008-11-07. TMD PDF's: gauge invariance, RG properties and Wilson lines. https://doi.org/10.1063/1.3122204

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