Radiative decays of heavy and light mesons in a quark triangle approach

Abstract

The radiative meson decays $V\to Pγ$ and $P\to γγ$ are analyzed using the quark triangle diagram. Experimental data yield well determined estimates of the universal quark-antiquark-meson couplings $g_{Vq\bar{q}'}$ and $g_{Pq\bar{q}'}$ for the light meson sector. Also predictions for the ratios of neutral to charged heavy meson decay coupling constants are given and await experimental confirmation.