Publication
Title
Wilson lines in the operator definition of TMDs : spin degrees of freedom and renormalization
Author
Abstract
A generalized idea of gauge invariance, that embodies into the Wilson lines the spin-dependent Pauli term ∼Fμν[γμ,γν], is applied to set up a new framework for the operator definition of transverse-momentum-dependent parton densities (TMDs). We show that such a treatment of gauge invariance is justified, since it does not change the leading-twist behavior of the TMDs, albeit it contributes to their twist-three properties, in particular, to their anomalous dimensions. We discuss other consequences of this generalization and its possible applications to lattice simulations of the TMDs.
Language
English
Source (journal)
arXiv
Publication
2011
Volume/pages
(2011), p. 1-5
Medium
E-only publicatie
Full text (publishers version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Record
Identification
Creation 09.01.2015
Last edited 02.10.2015
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