Parton-pseudo distribution functions from Lattice QCD

Apr 9, 2019, 9:30 AM
20m
Cavallerizza Reale - Aula Magna

Cavallerizza Reale - Aula Magna

Via Verdi 9, Turin
Parallel Session Talk WG7: Future of DIS WG7: Future of DIS

Speaker

Dr Savvas Zafeiropoulos

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 we also perform a comparison with the pertinent phenomenological determinations.

Primary authors

Dr Savvas Zafeiropoulos Prof. Kostas Orginos (College of WM and JLAB) Joseph Karpie (College of William and Mary) Dr Alexander Rothkopf (University of Stavanger) Prof. Anatoly Radyushkin (ODU and JLAB)

Presentation materials