Nucleons in Two-Flavor Partially-Quenched Chiral Perturbation Theory

TL;DR

This paper investigates the properties of protons and neutrons using partially-quenched chiral perturbation theory with two non-degenerate light flavors, calculating various physical quantities at the one-loop level.

Contribution

It provides the first detailed one-loop level calculations of nucleon properties in two-flavor partially-quenched chiral perturbation theory with non-degenerate quarks.

Findings

Computed nucleon masses, magnetic moments, and matrix elements.

Extended chiral perturbation theory to include non-degenerate flavors.

Provided analytical expressions for nucleon properties at one-loop.

Abstract

Properties of the proton and the neutron are explored in partially-quenched chiral perturbation theory with two non-degenerate light flavors. Masses, magnetic moments, matrix elements of isovector twist-2 operators and axial-vector currents are computed at the one-loop level in the chiral expansion.