J/Ψ PHOTOPRODUCTION AT NEXT-TO-LEADING ORDER
In this paper, we report on the calculation of the cross section of J/Ψ inclusive production in direct γγ collisions at next-to-leading order within the factorization formalism of nonrelativistic quantum chromodynamics (NRQCD). Theoretical predictions for the future e+e− international linear collider ILC are also presented.