Heavy quarkonium production in double Pomeron exchange processes in perturbative QCD
Abstract
We calculate the heavy quarkonium production in double pomeron exchange processes in perturbative QCD by using two-gluon exchange model. For the P-wave J productions, we find 1 and 2 production amplitudes which vanish in the forward scattering limit. We also calculate direct J/()+γ production in the same approach, and these direct contributions are much smaller than the feeddown contributions from the P-wave states.
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