The $\varphi a_0\gamma$- and $\varphi \sigma \gamma$-vertices in light cone QCD

Abstract

We study $\varphi a_0\gamma$- and $\varphi \sigma \gamma$-vertices in the framework of the light cone QCD sum rules and we estimate the coupling constants g${}_{\varphi a_0\gamma }$ and g${}_{\varphi \sigma \gamma }$ utilizing $\omega \varphi$-mixing. We compare our results with the previous estimations of these coupling constants in the literature obtained from phenomenological considerations.

8 pages, RevTex, 2 figures

References in corpus (3)

• Radiative VPgamma transitions and eta-eta' mixing
• The coupling constant g${}_{\rho \sigma \gamma }$ as derived from QCD sum rules
• Interference effects in the decay ϕ\to π^{0}π^{0}γand the coupling constant g_{ϕσγ}

Cited by in corpus (3)

• Radiative Scalar Meson Decays in the Light-Front Quark Model
• Scalar $a_0(980)$ meson in $\varphi \to {\pi }^0\eta \gamma$ decay
• g_a0-rho-gamma and g_f0-rho-gamma coupling constants in three point QCD sum rules