QCD sum rule analysis of the coupling constants g_{ρηγ} and g_{ωηγ}

Abstract

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