Inclusive J/ψ photoproduction at the ILC within the framework of non-relativistic QCD

Abstract

Based on the non-relativistic quantum chromodynamics factorization framework, we study the inclusive J/ψ photoproduction at the future high energy e+e− collider, International Linear Collider(ILC), where the initial photons come from the back-scattering of laser and electron (positron). The intermediate states, coverline{c} (3 {S}_1^{left[mathbf{1}right]} ,1 {S}_0^{left[mathbf{8}right]} ,3 {S}_1^{left[mathbf{8}right]} , 3 {P}_{0,1,2}^{left[mathbf{8}right]} ), and resolved photoproduction processes are considered. Numerical results show that the cross section of J/ψ photoproduction at the ILC could be very large, and the single resolved pro- cess via coverline{c} (3 {S}_0^{left[mathbf{8}right]} ) intermediate state dominates primarily the production. We also present various kinematic distributions for J/ψ photoproduction. Combining the high luminosity of the collision, J/ψ photoproduction at the ILC shall provide a good platform to test the NRQCD factorization.