Abstract
Based on Pomeron exchange model, J/Ψ and ϕ productionin electro-proton interaction are investigated with both linearand non-linear Pomeron trajectory. The experimental differentialcross sections measured as a function of the kinematic variableQ2,W and t are reproduced successfully in the model. Ourconclusions are that the Pomeron exchange model is a successfuldescription of J/Ψ and ϕ electro-productions on theproton, and that the linear trajectory is a good approximation tonon-linearity of the Pomeron trajectory.
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