Perturbative QCD Forbidden Charmonium Decays and Gluonia


Abstract in English

We address the problem of observed charmonium decays which should be forbidden in perturbative QCD. We examine the model in which these decays proceed through a gluonic component of the $J/Psi$ and the $eta_c$, arising from a mixing of $(cbar c)$ and glueball states. We give some bounds on the values of the mixing angles and propose the study of the $p bar{p} to phi phi$ reaction, at $sqrt{s} simeq 3$ GeV, as an independent test of the model.

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