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Inelastic J/ψ production in polarized photon-hadron collisions

Feng Yuan, Hui-Shi Dong, Li-Kun Hao, Kuang-Ta Chao

hep-pharXiv:hep-ph/9909221

Abstract

Presented here is a calculation of inelastic J/ψ production in polarized photon-hadron collisions under the framework of NRQCD factorization formalism. We consider the photoproduction of in the energy range relevant to HERA. The Weizsäcker-Williams approximation is adopted in the evaluation of the cross sections for ep collisions. We found that this process can give another independent test for the color-octet mechanism, and the different features for the two color-octet processes may provide further informations on the mechanism for inelastic photoproduction. And the discrepancy on the production asymmetry A between various sets of polarized gluon distribution functions is also found to be distinctive.

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