Radiative Decays of Vector Mesons in Broken SU(3) Models

Abstract

We have studied the radiative decays of the vector mesons in two SU(3)-breaking schemes. In our models we find it hard to reconcile the newly measured radiative widths of $\rho \to \pi \gamma$,, $K^{0*}\to K^0\gamma$, $\varphi \to \pi \gamma$, and $\varphi \to \eta \gamma$ with the older measurements and upper bounds on other radiative rates. In particular we have difficulty in understanding the narrow radiative width of $\rho$ and the upper bound on $K^{+*}\to K^{+}\gamma$..