New $J/\psi$ suppression data and the comovers interaction model
Laboratoire de Physique Théorique , Unité Mixte de Recherche UMR no. 8627 - CNRS, Université de Paris XI, Bâtiment 210, 91405, Orsay Cedex, France
2 Unité Mixte de Recherche UMR no. 8627 - CNRS, ECT, Villa Tambosi, Strada delle Tabarelle 286, 38050, Villazzano (Trento), Italy
New data on the $J/\psi$ suppression both in proton-nucleus and in lead-lead interactions have been presented recently by the NA50 collaboration. We show that these data, together with the final ones on sulfur-uranium interactions, can be described in the framework of the comovers interaction model with a unique set of three parameters: the nuclear absorption cross-section, the comovers interaction cross-section and a single (rescaled) absolute normalization. Expectations for $J/\psi$ suppression at RHIC are also discussed.
© Springer-Verlag, 2003