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Basing on the branching fractions of J/\psi \to VP from differentexperiments, we investigate on the properties of the coupling constants ofJ/\psi \to VP decays with a model-dependent approach. We find that the octetcoupling constant, g_8, of strong interaction is about twice larger than thatof the singlet coupling constant g_1; the electromagnetic breaking parametersg^i_E are larger than the mass breaking parameters g^i_M, moreover, the threeparameters of electromagnetic effect are about equal, but the three parametersof mass effect are obviously different and their uncertainties are also large;and the phase angle between strong and electromagnetic interaction is in therange of 70^{\circ} \sim 80^{\circ}. It deepens our understanding of thecoupling constant of J/\psi \to VP decays.

Study on the properties of the coupling constants of $J/\psi \rightarrow VP$ decays