TY - JOUR
T1 - Valence parton distribution of the pion from lattice QCD
T2 - Approaching the continuum limit
AU - Gao, Xiang
AU - Jin, Luchang
AU - Kallidonis, Christos
AU - Karthik, Nikhil
AU - Mukherjee, Swagato
AU - Petreczky, Peter
AU - Shugert, Charles
AU - Syritsyn, Sergey
AU - Zhao, Yong
N1 - Publisher Copyright:
© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
PY - 2020/11/17
Y1 - 2020/11/17
N2 - We present a high-statistics lattice QCD determination of the valence parton distribution function (PDF) of the pion, with a mass of 300 MeV, using two very fine lattice spacings of a=0.06 fm and 0.04 fm. We reconstruct the x-dependent PDF, as well as infer the first few even moments of the PDF using leading-twist 1-loop perturbative matching framework. Our analyses use both RI-MOM and ratio-based schemes to renormalize the equal-time bilocal quark-bilinear matrix elements of pions boosted up to 2.4 GeV momenta. We use various model-independent and model-dependent analyses to infer the large-x behavior of the valence PDF. We also present technical studies on lattice spacing and higher-twist corrections present in the boosted pion matrix elements.
AB - We present a high-statistics lattice QCD determination of the valence parton distribution function (PDF) of the pion, with a mass of 300 MeV, using two very fine lattice spacings of a=0.06 fm and 0.04 fm. We reconstruct the x-dependent PDF, as well as infer the first few even moments of the PDF using leading-twist 1-loop perturbative matching framework. Our analyses use both RI-MOM and ratio-based schemes to renormalize the equal-time bilocal quark-bilinear matrix elements of pions boosted up to 2.4 GeV momenta. We use various model-independent and model-dependent analyses to infer the large-x behavior of the valence PDF. We also present technical studies on lattice spacing and higher-twist corrections present in the boosted pion matrix elements.
UR - https://www.scopus.com/pages/publications/85097171165
U2 - 10.1103/PhysRevD.102.094513
DO - 10.1103/PhysRevD.102.094513
M3 - Article
AN - SCOPUS:85097171165
SN - 2470-0010
VL - 102
JO - Physical Review D
JF - Physical Review D
IS - 9
M1 - 094513
ER -