PoS - Proceedings of Science
Volume 308 - QCD Evolution 2017 (QCDEV2017) - Monday, May 22, 2017-Afternoon 2
Matching the Quasi Parton Distribution in a Momentum Subtraction Scheme
Y. Zhao* and I.W. Stewart
Full text: pdf
Published on: March 23, 2018
Abstract
The quasi parton distribution is a space-like correlation of quarks and gluons along the $z$ direction in a nucleon which can be calculated directly from lattice QCD. At large but finite nucleon momentum, the quasi parton distribution can be perturbatively matched to the physical parton distribution function through a factorization formula in large momentum effective theory. Following a nonperturbative renormalization of the quasi parton distribution in a regularization independent momentum subtraction scheme, we establish its matching to the $\overline{\text{MS}}$ PDF and calculate the non-singlet matching coefficient at next-to-leading order in perturbation theory.
DOI: https://doi.org/10.22323/1.308.0013
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