Document Type
Article
Publication Date
12-2019
DOI
10.1103/PhysRevD.100.114512
Publication Title
Physical Review D: Particles, Fields, Gravitation and Cosmology
Volume
100
Issue
11
Pages
114512 (18 pp.)
Abstract
We present a calculation of the pion valence quark distribution extracted using the formalism of reduced Ioffe-time pseudodistributions or more commonly known as pseudo-PDFs. Our calculation is carried out on two different 2 + 1 flavor QCD ensembles using the isotropic-clover fermion action, with lattice dimensions 243 × 64 and 323 × 96 at the lattice spacing of a = 0.127 fm, and with the quark mass equivalent to a pion mass of mπ ≃ 415 MeV. We incorporate several combinations of smeared-point and smeared-smeared pion source-sink interpolation fields in obtaining the lattice QCD matrix elements using the summation method. After one-loop perturbative matching and combining the pseudodistributions from these two ensembles, we extract the pion valence quark distribution using a phenomenological functional form motivated by the global fits of parton distribution functions. We also calculate the lowest four moments of the pion quark distribution through the “operator product expansion without operator product expansion.” We present a qualitative comparison between our lattice QCD extraction of the pion valence quark distribution with that obtained from global fits and previous lattice QCD calculations.
Original Publication Citation
Joó, B., Karpie, J., Orginos, K., Radyushkin, A. V., Richards, D. G., Sufian, R. S., & Zafeiropoulos, S. (2019). Pion valence structure from Ioffe-time parton pseudodistribution functions. Physical Review D: Particles, Fields, Gravitation and Cosmology, 100(11), 114512 doi:10.1103/PhysRevD.100.114512
ORCID
0000-0002-9326-1300 (Radyushkin)
Repository Citation
Joó, Bálint; Karpie, Joseph; Orinos, Kostas; Radyushkin, Anatoly V.; Richards, David G.; Sufian, Raza Sabbir; and Zafeiropoulos, Savvas, "Pion Valence Structure from Ioffe-Time Parton Pseudodistribution Functions" (2019). Physics Faculty Publications. 415.
https://digitalcommons.odu.edu/physics_fac_pubs/415
Comments
Published by the American Physical Society under the terms of the 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.