Inadequacy of the narrow resonance approximation in Φ → γa0 and Φ → γα0 decays

It is shown that the approximation of the narrow widths of the α0 and a0 resonances, that is used in both theoretical and experimental investigations of the radiative decays Φ → γa0 and Φ → γα0, is not valid. It is explained how to correct take into account corrections for finite widths.