Nondipolar Wilson links for quasiparton distribution functions

We propose a modified definition for a quasiparton distribution function (QPDF) with an equal-time correlator in the large momentum limit, whose two pieces of spacelike Wilson links are oriented in orthogonal directions. It is explicitly shown at the one-loop level that the linear divergence in the...

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Bibliographic Details
Published in:Physical review. D 2016-10, Vol.94 (7), Article 074036
Main Author: Li, Hsiang-nan
Format: Article
Language:English
Subjects:
Distribution functions
Divergence
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Summary:We propose a modified definition for a quasiparton distribution function (QPDF) with an equal-time correlator in the large momentum limit, whose two pieces of spacelike Wilson links are oriented in orthogonal directions. It is explicitly shown at the one-loop level that the linear divergence in the original QPDF with dipolar Wilson links, which complicates its matching to the standard light-cone parton distribution function (LPDF), is removed. The LPDF can then be extracted reliably from Euclidean lattice data for the QPDF with the nondipolar Wilson links.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.94.074036