Lattice "Cross-Sections" - Pion PDFs from Pseudo-PDFs and Pseudo-Structure Functions

19 Jun 2019, 10:20
20m
Wuchang

Wuchang

Parallel Hadron structure Hadron structure

Speaker

Colin Egerer (College of William and Mary)

Description

A general framework for the study of hadronic structure from Lattice QCD, dubbed "good lattice cross-sections", leverages QCD collinear factorization and ideas from the global PDF fitting community to reliably extract the full x-dependence of PDFs from the lattice. The calculation of pseudo-PDFs and gauge invariant two-current correlations within a hadron are two established realizations of this framework. In this presentation, we highlight recent results for pion PDFs obtained through each of these calculational schemes. Results are presented on several lattice ensembles, thereby addressing finite-volume, discretization and quark mass effects in the extracted distributions. Consideration is given to discretization effects and the potential to simultaneously analyze each data set.

Author

Colin Egerer (College of William and Mary)

Co-authors

David Richards (Jefferson Lab) Joseph Karpie (College of William and Mary) Raza Sufian (University of Kentucky) Kostas Orginos (William and Mary - Jlab) Dr Jianwei Qiu (Jefferson Lab) Dr Balint Joo (Jefferson Lab) Dr Anatoly Radyuskin (Jefferson Lab) Mr Md Tanjib Atique Khan (William and Mary) Savvas Zafeiropoulos Dr Frank Winter (Jefferson Lab)

Presentation materials