Abstract :
We calculate the decay rates φ→γπ0π0 and γπ0η in very good agreement with the recent accurate experimental data. We also point out the necessity of a View the MathML source contact vertex beyond the pure K+K− loop model. The decay widths φ→γf0(980) and φ→γa0(980) are also calculated taking into account the finite widths of the scalar resonances f0(980) and a0(980). The latter are shown to be essential in order to obtain meaningful results. The resulting decay rates to γf0(980) and γa0(980) are in good agreement with the experimental ones without invoking isospin breaking in the couplings of the f0(980) and a0(980) resonances to the K+K− and View the MathML source channels, at odds with recent proposals. The derived formula for calculating these φ radiative decay widths can be also applied in their own experimental analyses in order to obtain more precise results.
