QCD sum rule analysis of the coupling constants g_{\rho\eta\gamma} and g_{\omega\eta\gamma}

Abstract

The coupling constants g$_{\rho\eta\gamma}$ and g$_{\omega\eta\gamma}$ are calculated using QCD sum rules method by studying the three point ${\rho\eta\gamma}$ and ${\omega\eta\gamma}$ correlation functions. A comparison of the results with the values of the coupling constants that are deduced from the experimentally measured decay widths of $\rho\to \eta\gamma$ and $\omega\to \eta\gamma$ decays is performed.