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

Hadron structure from current-current correlation functions in lattice QCD

10 Sep 2020, 09:30
30m
Zoom

Zoom

Speaker

Raza Sufian (Jefferson Lab)

Description

We present how partonic structure of hadrons can be extracted from matrix elements of two spatially-separated currents, which are computable directly in lattice QCD and can be factorized into parton distribution functions with calculable hard coefficients. We demonstrate the recently derived one-loop matching coefficient has a well-controlled behavior in Ioffe-time, for example, in a specific calculation of pion valence quark distribution. We discuss issues in obtaining PDFs from the factorized matrix elements which involve an inverse problem - common to the extraction of PDFs from lattice QCD calculations or experimental data and what would require in a lattice calculation to discriminate between different large $x$ behaviors of pion valence PDF.

Primary authors

Raza Sufian (Jefferson Lab) Colin Egerer Joe Karpie (Columbia U) Yan-Qing Ma (Peking University) Kostas Orginos (College of William and Mary / JLab) Jianwei Qiu (Jefferson Lab) David Richards (Jefferson Laboratory)

Presentation Materials