Quarkonium Production and Color Deconfinement in Nuclear Collisions

Abstract

The suppression of quarkonium production in nucleus-nucleus collisions was originally proposed as a signal of colour deconfinement. Strong ``anomalous" J/ψsuppression in Pb-Pb collisions has been reported at this Conference by the NA50 Collaboration. Is this suppression really anomalous? Can we conclude that the quark-gluon plasma is already discovered? What has to be done next? I address these questions basing on the current theoretical understanding of quarkonium production and new precise experimental information.

16 pages, LaTeX, 6 figures, uses epsf.tex, espcrc1.sty (included); Invited talk given at the "Quark Matter 96" Conference, Heidelberg May 1996; to appear in the Proceedings

References in corpus (4)

• Charmonium Composition and Nuclear Suppression
• J/Psi Suppression in an Equilibrating Parton Plasma
• Charmonium Interactions in Nuclear Matter
• Non-perturbative Quarkonium Dissociation in Hadronic Matter

Cited by in corpus (28)

• Signatures of Quark-Gluon-Plasma formation in high energy heavy-ion collisions: A critical review
• A Quantitative Analysis of Charmonium Suppression in Nuclear Collisions
• Cross Sections for pi- and rho-induced Dissociation of J/psi and psi'
• Production and absorption of $c\bar{c}$ pairs in nuclear collisions at SPS energies
• $J/\Psi$ suppression in nuclear collisions at SPS energies
• A quantitative reanalysis of charmonium suppression in nuclear collisions
• Charmonium suppression in heavy-ion collisions
• Hard probes in heavy ion collisions at the LHC: heavy flavour physics
• Charmonium Suppression with cc~ Dissociation by Strings
• Chemical equilibration of quarks and gluons at RHIC and LHC energies
• Theoretical Interpretations of J/Psi Suppression: A Summary
• Intermediate-mass dilepton spectra and the role of secondary hadronic processes in heavy-ion collisions
• Quarkonium polarization in heavy ion collisions as a possible signature of the quark--gluon plasma
• Signals of the quark-gluon plasma in nucleus-nucleus collisions
• Density Fluctuations in the Quark-Gluon Plasma
• Theoretical issues in J/psi suppression
• Signatures of Absorption Mechanisms for J/psi and psi' Production in High-Energy Heavy-Ion Collisions
• A Monte Carlo Study of Erraticity Behavior in Nucleus-Nucleus Collisions at High Energies
• Total Hadron-Hadron Cross Sections at High Energies
• A QCD space-time analysis of quarkonium formation and evolution in hadronic collisions
• $J/\psi$ normal and anomalous suppressions in a hadron and string cascade model
• Nucleon number dependence of the onset of anomalous J/psi suppression and the dynamics of nuclear collisions
• Geometric Parameterization of $J/\Psi$ Absorption in Heavy Ion Collisions
• Finite volume effects on quarkonium dissociation temperature in an impenetrable QGP sphere
• Current Status of Quark Gluon Plasma Signals
• Theoretical summary: The First International Conference on Hard and Electromagnetic Probes in Relativistic Nuclear Collisions
• The Role of Produced Hadrons in J/psi Suppression
• Strangeness Production and Ultrarelativistic Cascades