Radiative decays $J/Ψ\toη^{(\prime)}γ$ in perturbative QCD

Details Radiative decays $J/Ψ\toη^{(\prime)}γ$ in perturbative QCD Radiative decays $J/Ψ\toη^{(\prime)}γ$ in perturbative QCD

2004-04-02

arxiv.org/abs/hep-ph/0404018v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 eps figures

Scientific paper

With the recent investigations of $g^{\ast}g^{\ast}-\eta^{(\prime)}$ transition form factor and $\eta-\eta^{\prime}$ mixing scheme, we present an updated study of the radiative decays $J/\Psi\to\eta^{(\prime)}\gamma$ in perturbative QCD. The decays are taken as a test ground for the $g^{\ast}g^{\ast}-\eta^{(\prime)}$ transition form factors and the $\eta-\eta^{\prime}$ mixing scheme. The form factors are found to be working for glunic $\eta^{(\prime)}$ productions and the mixing angle is constrained to be $\phi=35.1^{\circ}\pm0.8^{\circ}$.

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