Nucleon valence quark distribution functions from Lattice QCD

14 Apr 2021, 09:12
18m
Virtual (Stony Brook, NY)

Virtual

Stony Brook, NY

Online
Contributed Talk Structure Functions and Parton Densities Structure function and parton densities

Speaker

Christos Kallidonis (Jefferson Lab)

Description

We present results on the nucleon valence quark distribution extracted from Lattice QCD simulations, using a gauge ensemble of $N_f=2+1$ Wilson-Clover fermions with a pion mass of $m_\pi = 350$ MeV and lattice spacing of $a=0.091$ fm. We obtain reduced Ioffe Time Distributions (rITDs) by computing appropriate matrix elements on the lattice, and elaborate on the extraction of the desired quark distributions from the rITDs following the pseudo-PDF approach. A set of techniques are considered in order to ensure ground state dominance. Theoretical and experimental implications of our calculation are discussed.

Primary author

Christos Kallidonis (Jefferson Lab)

Co-authors

Robert Edwards (Jefferson Lab) Colin Egerer Kostas Orginos (College of William and Mary / JLab) David Richards (Jefferson Laboratory)

Presentation materials