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

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.

Comments: 32 pages, 2 figures