Nucleon structure with domain wall fermions

TL;DR

This paper discusses progress in calculating nucleon structure using domain wall fermions, presenting both quenched and dynamical lattice results with non-perturbative renormalization for some observables.

Contribution

It provides new lattice QCD calculations of nucleon structure functions with domain wall fermions, including quenched and dynamical results, and addresses renormalization issues.

Findings

Quenched results for structure function moments are complete with NPR.

Dynamical results are obtained without NPR, but axial charge is naturally renormalized.

Results contribute to understanding nucleon structure from lattice QCD.

Abstract

We report the status of RBCK calculations on nucleon structure with quenched and dynamical domain wall fermions. The quenched results for the moments of structure functions (< x >_q), (< x>_{\Delta u - \Delta d}), and (< 1 >_{\delta q}) from 1.3 GeV cutoff lattices are complete with non perturbative renormalization (NPR). The dynamical results with two degenerate dynamical quark flavors from 1.7 GeV cutoff lattices are without NPR while the axial charge result is naturally renormalized.