Secondary charmonium production in heavy ion collisions at LHC energy Original Research Article

We consider the production of charmonium by DView the MathML source annihilation during the mixed and hadronic phase of a pb−pb collision at LHC energy. The calculations for secondary J/ψ and ψ′ production are performed within a kinetic model taking into account the spacetime evolution of a longitudinally and transversely expanding medium. It is shown that the yield of secondary J/ψ mesons depends strongly on the J/ψ dissociation cross section with co-moving hadrons. Within the most likely scenario for the dissociation cross section it will be negligible. The secondary production of ψ′ mesons, however, due to their large cross section above the threshold, can substantially exceed the primary yield.