Lattice calculation of parton distributions
Date
2015-07-07Author
Alexandrou, C
Cichy, K
Drach, V
Garcia-Ramos, E
Hadjiyiannakou, K
Jansen, K
Steffens, F
Wiese, C
Subject
hep-lat hep-lat hep-ph
Metadata
Show full item recordAbstract
We report on our exploratory study for the direct evaluation of the parton distribution functions from lattice QCD, based on a recently proposed new approach. We present encouraging results using N f = 2 + 1 + 1 twisted mass fermions with a pion mass of about 370 MeV. The focus of this work is a detailed description of the computation, including the lattice calculation, the matching to an infinite momentum and the nucleon mass correction. In addition, we test the effect of gauge link smearing in the operator to estimate the influence of the Wilson line renormalization, which is yet to be done.
Description
Minor changes in the text. Version published in PRD. 19 pages, 6
figures
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Publisher
American Physical Society (APS)
Journal
Physical Review D
Volume
92
Issue
1
Pagination
0-0
Publisher URL
Number
014502
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