Based on the factorization framework of nonrelativistic quantum chromodynamics, we study the associated J/ψ+c+c̄ photoproduction process at next-to-leading order in αₛ and leading order in the velocity expansion. The total cross section and differential cross section in pT², W and z are presented. The results indicate that the next-to-leading order corrections are substantial, and testable in experiment.
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Feng et al. (2024) studied this question.
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