Jψ radiative decays into ππγ and KKγ

The radiative decays of $\text{J}\text{ψ}$ into f/γ, f′γ, ππγ and KKγ have been measured using the double arm spectrometer DASP at DORIS. We find B(J/φ→fγ)=(J/φ→fγ)/(J/φ→all)=(0.9±0.3)×10^?3 to (1.5±0.4)×10^?3 depending on the multi- pole mode of the $\text{J}\text{ψ}$ decay and that $\text{B(}\text{J}\text{/φ→}\text{f}\text{′γ)}\text{B(}\text{J}\text{/γ→}\text{f}\text{γ)?}\text{1}\text{3}$.