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arXiv · 1602.07575

Non-dipolar Wilson links for quasi-parton distribution functions

Hsiang-nan Li
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Abstract

We propose a modified definition for a quasi-parton distribution function (QPDF) with an equal-time correlator in the large momentum limit, whose two pieces of space-like Wilson links are oriented in orthogonal directions. It is explicitly shown at 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 non-dipolar Wilson links.

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Hsiang-nan Li. 2016-02-24. Non-dipolar Wilson links for quasi-parton distribution functions. https://doi.org/10.1103/physrevd.94.074036

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