Secondary charmonium production in heavy ion collisions at LHC energy

We consider the production of charmonium by D (D) over bar annihilation dur ing the mixed and hadronic phase of a Pb-Pb collision at LHC energy. The ca lculations for secondary J/psi and psi' production are performed within a k inetic model taking into account the spacetime evolution of a longitudinall y and transversely expanding medium. It is shown that the yield of secondar y J/psi mesons depends strongly on the J/psi dissociation cross section wit h co-moving hadrons. Within the most likely scenario for the dissociation c ross section it will be negligible. The secondary production of psi' mesons , however, due to their large cross section above the threshold, can substa ntially exceed the primary yield.