7-11 September 2020
Center for Nuclear Femtography (SURA) and Center for Frontiers in Nuclear Science (SBU/BNL)
US/Eastern timezone

Nucleon Ioffe-time Pseudo-distributions from Distillation

10 Sep 2020, 11:32
12m
Zoom

Zoom

Speaker

Colin Egerer

Description

The pseudo-distribution formalism is one such lattice methodology capable of extracting light-cone distributions from matrix elements of suitably constructed Euclidean non-local operators of a spacelike extent. Leveraging the distillation spatial smearing program, we extract the unpolarized isovector quark distribution of the nucleon via a direct 1-loop matching of the Ioffe-time pseudo-distribution and model PDFs. We benchmark the efficacy and systematics inherent to this choice by also extracting the PDF from the matched light-cone Ioffe-time distribution. The tempering of excited-states and improved spatial sampling afforded by distillation is likewise seen to allow for a meaningful simultaneous determination of the isovector quark and sea-quark distributions. Comparisons with phenomenological determinations are made.

Primary authors

Co-authors

Kostas Orginos (College of William and Mary / JLab) Robert Edwards (Jefferson Lab) Anatoly Radyushkin (ODU/JLab)

Presentation Materials