Based on the generalized vector meson dominance model in QCD,we study photoproduction of vectormeson γ off the proton by use of the QCD inspired model in which the contributions from quark-quark,gluon-gluon,and quark-gluon interference term to observable are taken into consideration.Calculations are performed for total crosssection σ_(tot),differential cross section dσ/dt,ratio of the real part to imaginary part of forward scattering amplitude ρ,and nuclear slop parameter function β.The mediators of interactions between projectiles (the quark and antiquark pairfluctuated from the real the photon) and the proton target (three-quark system) are the tensor Glueball and Odderoninstead of using the usual Pomeron exchange.The theoretical predictions for σ_(tot) (s) are consistent with the experimentaldata within error bars of the data.The data for dσ/dt,ρ,andβ are urgently needed.
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