Coupling constants g${}_{a_0\omega \gamma }$ and g${}_{a_0\rho \gamma }$ as derived from QCD sum rules

Abstract

We consider the two point correlation function of scalar current in QCD sum rules approach to estimate the overlap amplitude of $a_0$ meson. We then employ QCD sum rules to calculate the coupling constants g${}_{\omega a_0\gamma }$ and g${}_{\rho a_0\gamma }$ by studying the three point $a_0\omega \gamma$- and $a_0\rho \gamma$-correlation functions.

Comments: 9 pages, 4 figures, RevTex