Gluon Quasi-Parton-Distribution Functions from Lattice QCD

Fan, Zhou-You; Yang, Yi-Bo; Anthony, Adam; Lin, Huey-Wen; Liu, Keh-Fei

doi:10.1103/PhysRevLett.121.242001

Title: Gluon Quasi-Parton-Distribution Functions from Lattice QCD

Journal Article · Tue Dec 11 00:00:00 EST 2018 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.121.242001· OSTI ID:1485354

Fan, Zhou-You; Yang, Yi-Bo; Anthony, Adam; Lin, Huey-Wen; Liu, Keh-Fei

We present the first attempt to access the x dependence of the gluon unpolarized parton-distribution function (PDF), based on lattice simulations using the large-momentum effective theory approach. The lattice calculation is carried out with pion masses of 340 and 678 MeV on a (2 + 1)-flavor domain-wall fermion configuration with lattice spacing a = 0.111 fm, for the gluon quasi-PDF matrix element with the nucleon momentum up to 0.93 GeV. Taking the normalization from similar matrix elements in the rest frame of the nucleon and pion, our results for these matrix elements are consistent with the Fourier transform of the global fit CT14 and PDF4LHC15 NNLO of the gluon PDF, within statistical uncertainty and the systematic one up to power corrections, perturbative $$O$$(α_s) matching and the mixing from the quark PDFs.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of Kentucky, Lexington, KY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0013065; AC02-05CH11231

OSTI ID:: 1485354

Alternate ID(s):: OSTI ID: 1544148; OSTI ID: 1599161

Report Number(s):: DOE-UKY-13065-1808.02077; PRLTAO; 242001

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 121 Journal Issue: 24; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 49 works

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