Radiative decays J/Ψ→η⁽′⁾γ in perturbative QCD

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With the recent investigations of g-η⁽′⁾ transition form factor and η-η′ mixing scheme, we present an updated study of the radiative decays J/Ψ→η⁽′⁾γ in perturbative QCD. The decays are taken as a test ground for the g-η⁽′⁾ transition form factors and the η-η′ mixing scheme. The form factors are found to be working for glunic η⁽′⁾ productions and the mixing angle is constrained to be ϕ=35.1∘±0.8∘.