Abstract
Assuming f0(980) and a0(980) are mainly qqqq low mass scalar mesons and mixed with qq high mass scalar mesons, we analyzed the mixing effects for φ → f0(980)γ, φ → a0(980)γ, f0(980) → γγ and a0(980) → γγ. Used the vector meson dominance model (VDM), these decay amplitudes are expressed by coupling parameters B describing the S(qqqq scalar meson)‐V(vector meson)‐V(vector meson) coupling and B′ describing the S′(qq scalar meson)‐V‐V coupling. If the magnitudes for B and B′ are ∼ 2.8GeV−1 and ∼ 12GeV−1, respectively, the mixing angle between a0(980) and a0(1450) are ∼ 9°, and the mixing parameter λ01 causing the mixing between I = 0 qqqq state and qq state is ∼ 0.24GeV2 , the experimental data for these radiative decays are interpreted consistently.
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