Effects of Mixing Between Low and High Mass Scalar Mesons for Radiative Decays Involving ⨍0(98O) and 𝒂0(980).

Assuming ⨍0(98O) and 𝒂0(980). are mainly qqq̅q̅ low mass scalar mesons and mixed with qq̅ high mass scalar mesons, we analyzed the mixing effects for 𝜙 → ⨍0(98O)γ, 𝜙→ 𝒂0(980)γ, ⨍0(98O) → γγ and 𝒂0(980) → γγ. Used the vector meson dominance model (VDM), these decay amplitudes are expressed by coupling parameters B describing the S(qqq̅q̅ scalar meson)-V(vector meson)-V(vector meson) coupling and B′ describing the S′(qq̅ 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 qqq̅q̅ state and qq̅ state is ∼ 0.24GeV2 , the experimental data for these radiative decays are interpreted consistently. [ABSTRACT FROM AUTHOR]