Jψ + γ production of the double diffractive dissociation process in the p + p(p) collision and the pomeron model of Donnachie-Landshoff

Using the double pomeron exchange mechanism, we have studied the diffractive dissociation process p + p(p) → Xp + Xp(p) + Jψ + γ at high energy and have shown that these processes can be effectively used to test the pomeron structure model proposed by Donnachie and Landshoff.