The coupling constants $g_{\rho\pi\gamma}$ and $g_{\omega\pi\gamma}$ as derived from QCD sum rules

Abstract.

We employ QCD sum rules to calculate the coupling constants $g_{\rho\pi\gamma}$ and $g_{\omega\pi\gamma}$ by studying the three point ${\rho\pi\gamma}$ and ${\omega\pi\gamma}$ correlation functions. Our results are in good agreement with the coupling constants $g_{\rho\pi\gamma}$ and $g_{\omega\pi\gamma}$ that are deduced utilizing the experimentally measured values of the $\Gamma(\rho^0\rightarrow \pi^0\gamma)$ and $\Gamma(\omega\rightarrow \pi^0\gamma)$ decay widths.