Meson-baryon effective chiral Lagrangians at order $p^4$

TL;DR

This paper develops a comprehensive set of meson-baryon chiral Lagrangians at order p^4 for three flavors, enabling detailed one-loop quantum calculations in hadronic physics.

Contribution

It constructs 540 independent Lorentz-invariant terms for meson-baryon interactions at order p^4, a significant step for theoretical analyses.

Findings

Provides a complete basis for one-loop calculations

Identifies minimal processes involving mesons and photons at this order

Enables systematic studies of meson-baryon interactions

Abstract

We construct the three-flavor Lorentz-invariant meson-baryon chiral Lagrangians at the order $p^4$, with which a full one-loop investigation may be performed. One obtains 540 independent terms. The processes with the minimal number of mesons and photons that this order Lagrangians may contribute to are also presented.