Continuum limit of parton distribution functions from the pseudo-distribution approach on the lattice

Abstract

Precise exploration of the partonic structure of the nucleon is one of the most important aims of high-energy physics. In recent years, it has become possible to address this topic with first-principle lattice QCD investigations. In this talk, we focus on the so-called pseudo-distribution approach to determine the isovector unpolarized PDFs. In particular, we employ three lattice spacings to study discretization effects and extract the distributions in the continuum limit, at a pion mass of around 370 MeV. Also, for the first time with pseudo-PDFs, we explore effects of the 2-loop matching from pseudo- to light-cone distributions.

Comments: 10 pages, 6 figures, proceedings of the 39th International Symposium on Lattice Field Theory LATTICE 2022, 8-13 August 2022, Bonn, Germany