Analysis of the $N_f=2+1$ lattice QCD results on the lowest-lying baryon masses using covariant ChPT

TL;DR

This paper reviews how covariant chiral perturbation theory helps interpret lattice QCD results on baryon masses and predicts related sigma-terms, enhancing understanding of low-energy baryon structure.

Contribution

It applies covariant ChPT to analyze recent lattice QCD data on baryon masses and provides predictions for sigma-terms, advancing the theoretical understanding.

Findings

Chiral extrapolation of lattice results agrees with experimental data

Predicted baryonic sigma-terms provide insights into baryon structure

Demonstrated effectiveness of covariant ChPT in low-energy QCD analysis

Abstract

We review recent progress in the understanding of low-energy baryon structure by means of chiral perturbation theory. In particular, we discuss the application of this formalism to the description of the quark mass dependence of recent Lattice QCD results on the masses. We present the chiral extrapolation of those of the PACS-CS and LHP collaborations and we predict the baryonic sigma-terms.