Large-N_c operator analysis of 2-body meson-baryon counterterms in the chiral Lagrangian

TL;DR

This paper analyzes the structure of 2-body meson-baryon counterterms in the chiral SU(3) Lagrangian using large-N_c operator techniques, providing insights into parameter correlations at leading order.

Contribution

It introduces a large-N_c operator analysis of Q^2 counterterms involving decuplet fields in the chiral Lagrangian, revealing parameter correlations.

Findings

Derived correlations of chiral parameters from 1/N_c expansion

Constructed Q^2 counterterms with decuplet fields

Provided theoretical insights into baryon-meson interactions

Abstract

The chiral SU(3) Lagrangian with the baryon octet and decuplet fields is considered. The Q^2 counterterms involving the decuplet fields are constructed. We derive the correlation of the chiral parameters implied by the 1/N_c expansion at leading order in QCD.