16–20 Sept 2019
Ecole Polytechnique, Palaiseau, France
Europe/Paris timezone

Parton-pseudo distribution functions from Lattice QCD

18 Sept 2019, 15:10
25m
Amphithéâtre Sophie Germain (Alan Turing Building)

Amphithéâtre Sophie Germain

Alan Turing Building

Hadronic structure Parallel 1

Speaker

Savvas Zafeiropoulos (Universität Heidelberg)

Description

The light-cone definition of Parton Distribution Functions (PDFs) does not allow for a direct ab initio determination employing methods of Lattice QCD simulations that naturally take place in Euclidean spacetime. In this presentation we focus on pseudo-PDFs where the starting point is the equal time hadronic matrix element with the quark and anti-quark fields separated by a finite distance. We focus on Ioffe-time distributions, which are functions of the Ioffe-time ν, and can be understood as the Fourier transforms of parton distribution functions with respect to the momentum fraction variable x. We present lattice results for the case of the nucleon and the pion and we also perform a comparison with the pertinent phenomenological determinations.

Authors

Savvas Zafeiropoulos (Universität Heidelberg) Kostas Orginos (William and Mary - Jlab) David Richards (Jefferson Lab) Dr Alexander Rothkopf (University of Stavanger) Joseph Karpie (College of William and Mary) Dr Balint Joo (JLAB) Prof. Anatoly Radyushkin (ODU and JLAB) Dr Raza Sufian (JLAB)

Presentation materials