Experimental overview: quarkonia as probes for deconfinement

Abstract

The current status of the experimental investigation of quarkonia in heavy-ion collisions as probes for deconfinement is reviewed. The emphasis is put on the qualitative understanding of charmonia (ccbar bound states) and bottomonia (bbbar) based on the results in the past few years. In particular, the observation of non-primordial J/psi (ccbar) production as signature of deconfinement based on different observables and the sequential suppression patterns of the Upsilon (bbbar) states are discussed. An outlook focusing on the time scale until the next quark matter conference is provided.