Speaker
Description
The vector mesons photoproduction off proton at high energy is widely assumed to proceed via mechanism that are sensitive to glue physics in the target proton. On the basis of the factorisation theorem, this kind of process can be considered as three separate parts: the fluctuation of the virtual photon into a quark-antiquark pair; the interaction of the quark-antiquark pair with the proton; and the formation of the vector meson from the quark-antiquark pair. In our reaction model, the photon-vector mesons transition amplitudes are described by quark propagators and mesons BSA solved with modern gluon model, the complex interaction between quarks and target proton are quantified as Pomeron exchange. Our results imply that the reaction model can unify both light and heavy vector mesons photoproduction from threshold to very high energy.