J/ψ Photoproduction in pp and pÞ
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Graphical Abstract
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Abstract
The production of J/ψ originating from photoproduction processes in pp and
pÞ collisions at leading order is calculated. The color singlet and color octet mechanisms for heavy quarkonium production are reviewed within nonrelativistic QCD, and be used to deal with the direct photon and resolved photon processes respectively. Comparing with the leading order results of J/ψ production, the numerical results show that the modification of photoproduction processes for J/ψ production become obvious at large p-T region.
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