Psi radiative decays and glueball

It is shown how perturbative QCD at lowest order can be successfully compared with the data for the inclusive J/psi radiative decays. Our interpretation of the observed γ spectrum allows us to rule out the possibility of gluons having an effective mass and leads to the prediction that the observed E (1440) object has spin 0-. In the 0+ sector: glueballs around 1 GeV may contribute, as well as epsilon and S* resonances. More accurate data on ππ, K antiK and eta eta channels would allow to distinguish between these two possibilities for a 0+ signal which is definitely required by the model