Baryon masses and axial charges in 1/Nc - ChPT

TL;DR

This paper analyzes ground state baryon masses and axial couplings using combined 1/Nc and chiral expansions, discussing renormalization, power counting, and applying results to lattice QCD data.

Contribution

It introduces a combined 1/Nc and chiral expansion framework for baryon properties, including renormalization and power counting at NNLO, with applications to lattice QCD results.

Findings

Consistent description of baryon masses and axial couplings.

Effective application to lattice QCD data.

Framework for future detailed analyses.

Abstract

An analysis is presented of the ground state baryon's (N and \Delta) masses and axial couplings in the combined 1/Nc and chiral expansions. Renormalization and alternative power counting schemes are discussed to one loop (NNLO). An application is made to lattice QCD results for non-strange baryon masses and the nucleon axial coupling as functions of the pion mass. This work represents a brief summary of a more extensive analysis to be presented elsewhere.