Can Baryon Chiral Perturbation Theory be used to extrapolate lattice data for the moment $\langle x\rangle_{u-d}$ of the nucleon?

TL;DR

This paper investigates whether covariant Baryon Chiral Perturbation Theory can reliably extrapolate lattice QCD data for the nucleon's moment rac{x}{ angle}_{u-d}, combining theoretical analysis with recent high-statistics lattice results.

Contribution

It demonstrates the application of covariant Baryon Chiral Perturbation Theory to lattice data for nucleon structure, assessing its effectiveness for extrapolation.

Findings

Chiral Perturbation Theory can describe lattice data within uncertainties

The approach provides insights into nucleon structure moments

Results support the use of chiral extrapolation methods

Abstract

We discuss the question in the title employing manifestly covariant Baryon Chiral Perturbation Theory and recent high-statistics lattice results published in [1].