Radiative Decays involving a0(980) and f0(980) in the Vector Meson Dominance Model

Abstract

We summarize some features of the vector meson dominance model which was recently proposed for studying radiative decays involving the scalar mesons. Using the experimental values of $\Gamma (a_0\to \gamma \gamma )$, $\Gamma (f_0\to \gamma \gamma )$ and $\Gamma (\varphi \to a_0\gamma )$ as inputs, we show that the model predicts a large hierarchy between $\Gamma (a_0\to \omega \gamma )$ and $\Gamma (a_0\to \rho \gamma )$ as well as between $\Gamma (f_0\to \omega \gamma )$ and $\Gamma (f_0\to \rho \gamma )$.

7pages, Talk given by M. Harada at International Symposium on Hadron Spectroscopy, Chiral Symmetry and Relativistic Description of Bound Systems, February 24-26, 2003, Nihon University, Tokyo, Japan