The coupling constants g_{ρπγ} and g_{ωπγ} as derived from QCD sum rules}

Details The coupling constants g_{ρπγ} and g_{ωπγ} as derived from QCD sum rules} The coupling constants g_{ρπγ} and g_{ωπγ} as derived from QCD sum rules}

2001-03-13

arxiv.org/abs/nucl-th/0103033v1

Eur.Phys.J.C24:117-120,2002

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1007/s100520200934

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 for the decay widths $\Gamma(\rho^0\to \pi^0\gamma)$ and $\Gamma(\omega\to \pi^0\gamma)$ calculated using the obtained coupling constants are in good agreement with the experimental values of these decay widths.

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