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

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

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...

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Veröffentlicht in:AIP conference proceedings 2009-01, Vol.1105 (1), p.327-330
Hauptverfasser: Cherednikov, I O, Stefanis, N G
Format: Artikel
Sprache:eng
Schlagworte:
COMPTON EFFECT
DISTRIBUTION FUNCTIONS
FIELD OPERATORS
GAUGE INVARIANCE
GLUONS
HADRONS
LIGHT CONE
PHOTOPRODUCTION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUARKS
RENORMALIZATION
T INVARIANCE
TRANSVERSE MOMENTUM
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Beschreibung
Zusammenfassung: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.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3122204