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arXiv · hep-ph/9909221

Inelastic $J/ψ$ production in polarized photon-hadron collisions

Feng Yuan·Hui-Shi Dong·Li-Kun Hao·Kuang-Ta Chao
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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 $\jpsi$ 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 $\jpsi$ 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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Feng Yuan, Hui-Shi Dong, Li-Kun Hao, Kuang-Ta Chao. 1999-09-02. Inelastic $J/ψ$ production in polarized photon-hadron collisions. https://doi.org/10.1103/physrevd.61.114013

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