Charmonium dynamics in dA and AA at RHIC and LHC

TL;DR

This paper investigates charmonium suppression in heavy-ion collisions at RHIC and LHC energies, extending models to include recombination effects, and successfully reproduces experimental data without parameter fitting.

Contribution

It introduces an extended comovers interaction model that incorporates secondary charmonium production from recombination, matching RHIC data without fitting parameters.

Findings

Reproduces J/psi suppression data at RHIC without parameter fitting

Predicts strong J/psi suppression at LHC energies

Extends the comovers interaction model to include recombination effects

Abstract

We discuss features of charmonium suppression at $\sqtr{s} = 200$ GeV within the framework of the Glauber-Gribov theory and the comovers interaction model. The latter approach has been extended by allowing for secondary charmonium production due to recombination of $c\bar{c}$ pairs in the medium, estimated from pp data at the same bombarding energy. Centrality and rapidity dependence of the nuclear modification factor for J/psi in d+Au, Cu+Cu and Au+Au collisions at RHIC are reproduced without fitting a single model parameter. A strong suppression of J/psi is predicted for LHC energies.