Octet Baryon Masses in Partially Quenched Chiral Perturbation Theory

TL;DR

This paper calculates the octet baryon mass spectrum using advanced chiral perturbation theory techniques to aid in extrapolating lattice QCD results.

Contribution

It provides next-to-next-to-leading order calculations in partially quenched heavy baryon chiral perturbation theory including dynamical decuplet baryons.

Findings

Mass spectrum computed to high order in chiral perturbation theory.

Results facilitate more accurate lattice QCD extrapolations.

Includes treatment of dynamical decuplet baryons.

Abstract

The mass spectrum of the lowest lying octet baryons is calculated to next-to-next-to-leading order in heavy baryon chiral perturbation theory and partially quenched heavy baryon chiral perturbation theory. We work in the isospin limit and treat the decuplet baryons as dynamical fields. These results are necessary for extrapolating QCD and partially quenched QCD lattice simulations of the octet baryon masses.