English

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

Nuclear Theory 2011-09-13 v1

Abstract

We employ QCD sum rules to calculate the coupling constants gρπγ_{\rho\pi\gamma} and gωπγ_{\omega\pi\gamma} by studying the three point ρπγ{\rho\pi\gamma}- and ωπγ{\omega\pi\gamma}-correlation functions. Our results for the decay widths Γ(ρ0π0γ)\Gamma(\rho^0\to \pi^0\gamma) and Γ(ωπ0γ)\Gamma(\omega\to \pi^0\gamma) calculated using the obtained coupling constants are in good agreement with the experimental values of these decay widths.

Keywords

Cite

@article{arxiv.nucl-th/0103033,
  title  = {The coupling constants g_{\rho\pi\gamma} and g_{\omega\pi\gamma} as derived from QCD sum rules}},
  author = {A. Gokalp and O. Yilmaz},
  journal= {arXiv preprint arXiv:nucl-th/0103033},
  year   = {2011}
}