摘要
Using three sets of Pomeron structure functions, the cross sections of J/ψ and γ associated productionvia resolved photon and proton diffractive scatting in ep collision are investigated. It is found that the cross sectionscalculated with various gluon distribution functions of Pomeron are different. The discrepancy is about 1.8 times fordifferential cross sections and 1.7 times for total cross sections. The experimental studies of the process could give valuableinsight in the diffractive production mechanism and test the color-octet mechanism for heavy quarkonium production ina new environment.
基金
The project supported in part by "High Energy Particle-Nuclear Interaction" (10175074) from National Natural Science Foundation of China, Natural Science Foundation of Hebei Province of China (100114), and the Youth Foundation of North China Electric Power University