Heavy quarkonium production in double Pomeron exchange processes in perturbative QCD

Details Heavy quarkonium production in double Pomeron exchange processes in perturbative QCD Heavy quarkonium production in double Pomeron exchange processes in perturbative QCD

2001-03-20

arxiv.org/abs/hep-ph/0103213v2

Phys.Lett. B510 (2001) 155-160

Physics

High Energy Physics

High Energy Physics - Phenomenology

Some discussions and references added

Scientific paper

10.1016/S0370-2693(01)00582-2

We calculate the heavy quarkonium production in double pomeron exchange processes in perturbative QCD by using two-gluon exchange model. For the $P$-wave $\chi_J$ productions, we find $\chi_1$ and $\chi_2$ production amplitudes which vanish in the forward scattering limit. We also calculate direct $J/\psi(\Upsilon)+\gamma$ 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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