Coupling constants g$_{a_0ωγ}$ and g$_{a_0ργ}$ as derived from QCD sum rules

Details Coupling constants g$_{a_0ωγ}$ and g$_{a_0ργ}$ as derived from QCD sum rules Coupling constants g$_{a_0ωγ}$ and g$_{a_0ργ}$ as derived from QCD sum rules

2001-07-05

arxiv.org/abs/hep-ph/0107041v1

Eur.Phys.J.C22:323-326,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figures, RevTex

Scientific paper

10.1007/s100520100801

We consider the two point correlation function of scalar current in QCD sum
rules approach to estimate the overlap amplitude of $a_0$ meson. We then employ
QCD sum rules to calculate the coupling constants g$_{\omega a_0\gamma}$ and
g$_{\rho a_0\gamma}$ by studying the three point ${a_0\omega\gamma}$- and
${a_0\rho\gamma}$-correlation functions.

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