Nucleon structure from mixed action calculations using 2+1 flavors of asqtad sea and domain wall valence fermions

TL;DR

This study uses mixed-action lattice QCD calculations with 2+1 flavors to analyze nucleon structure, including form factors and spin decomposition, comparing results with phenomenological data.

Contribution

It introduces high-statistics lattice calculations combining asqtad sea and domain wall valence fermions, providing detailed nucleon structure insights.

Findings

Consistent vector and axial form factors with phenomenology

Detailed moments of generalized parton distributions obtained

Implications for nucleon spin decomposition clarified

Abstract

We present high statistics results for the structure of the nucleon from a mixed-action calculation using 2+1 flavors of asqtad sea and domain wall valence fermions. We perform extrapolations of our data based on different chiral effective field theory schemes and compare our results with available information from phenomenology. We discuss vector and axial form factors of the nucleon, moments of generalized parton distributions, including moments of forward parton distributions, and implications for the decomposition of the nucleon spin.