Electromagnetic Decay Rates of Neutral Mesons

Abstract

A simple model combining vector dominance, SU(3) symmetry, and the $\ensuremath{\omega}\ensuremath{-}\ensuremath{\varphi}$ and $\ensuremath{\eta}\ensuremath{-}{\ensuremath{\eta}}^{\ensuremath{'}}$ mixing hypotheses is in reasonable agreement with all measured electromagnetic decay rates of neutral vector and pseudoscalar mesons. In particular, this model predicts the width of the ${\ensuremath{\eta}}^{\ensuremath{'}}$ meson to be between 0.7 and 1.7 MeV.