Coupling constants g$_{a_0ωγ}$ and g$_{a_0ργ}$ 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$_{ωa_0γ}$ and g$_{ρa_0γ}$ by studying the three point ${a_0ωγ}$- and ${a_0ργ}$-correlation functions.

9 pages, 4 figures, RevTex