Continuum Extrapolation of Moments of Nucleon Quark Distributions in Full QCD

TL;DR

This paper computes moments of nucleon quark distributions in unquenched lattice QCD at multiple lattice spacings to analyze their behavior in the continuum limit, providing insights into nucleon structure.

Contribution

It presents a continuum extrapolation of nucleon quark distribution moments using unquenched lattice QCD at different lattice spacings, combining new and previous results.

Findings

Moments calculated at multiple lattice spacings

Continuum limit behavior analyzed

Results contribute to understanding nucleon structure

Abstract

Moments of light cone quark density, helicity, and transversity distributions are calculated in unquenched lattice QCD at $\beta = 5.5$ and $\beta = 5.3$ using Wilson fermions on $ 16^3 \times 32 $ lattices. These results are combined with earlier calculations at $\beta = 5.6$ using SESAM configurations to study the continuum limit.