Quark-mass and $1/N_c$ corrections to the vector-meson pseudoscalar-meson photon ($VP\gamma$) interaction

TL;DR

This paper investigates how quark-mass and 1/N_c corrections influence radiative transitions between vector and pseudoscalar mesons using a chiral effective Lagrangian, fitting experimental data to refine theoretical models.

Contribution

It provides a detailed analysis of corrections to meson interactions and fits coupling constants to experimental decay rates within a chiral framework.

Findings

Good agreement with 12 experimental decay rates

Identified key coupling constants for meson interactions

Demonstrated the importance of quark-mass and 1/N_c corrections

Abstract

We analyze quark-mass and $1/N_c$ corrections to all of the radiative transitions between the vector-meson nonet and the pseudoscalar-meson nonet within a chiral effective Lagrangian approach. We perform fits of the available coupling constants to experimental data and discuss the corresponding approximations. In terms of five (six) coupling constants, we obtain a reasonably good description of the 12 experimental decay rates.