On J/psi Production in Nuclear Collisions

Abstract

Data on J/psi production in inelastic proton-proton, proton-nucleus and nucleus-nucleus interactions at 158 A GeV are analyzed and it is shown that the ratio of mean multiplicities of J/psi mesons and pions is the same for all these collisions. This observation is difficult to understand within current models of J/psi production in nuclear collisions based on the assumption of hard QCD creation of charm quarks.

15 pages, 5 figures, significant changes introduced

References in corpus (5)

• Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon
• On the Early Stage of Nucleus--Nucleus Collisions
• Charged Particle Production in Proton-, Deuteron-, Oxygen- and Sulphur-Nucleus Collisions at 200 GeV per Nucleon
• Charmonium suppression in heavy-ion collisions
• Strangeness and Pion Production as Signals of QCD Phase Transition

Cited by in corpus (13)

• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• Statistical Coalescence Model with Exact Charm Conservation
• Open charm in nuclear matter at finite temperature
• Open charm and charmonium production at relativistic energies
• Evidence for Statistical Production of J/psi Mesons in Nuclear Collisions at 158--200 A GeV
• Open charm production in relativistic nucleus-nucleus collisions
• J/psi Suppression and Enhancement in Au+Au Collisions at the BNL RHIC
• Statistical Coalescence Model Analysis of J/psi Production in Pb+Pb Collisions at 158 A GeV
• Omega, J/psi and psi' Transverse Mass Spectra at RHIC
• Open and Hidden Charm Production in Heavy Ion Collisions at Ultrarelativistic Energies
• Transverse Momentum Spectra of $J/\psi$ and ${\psi }^{\prime }$ Mesons from Quark Gluon Plasma Hadronization in Nuclear Collisions
• Charm Program of NA61/SHINE: Motivation and Measurements
• Highlights of Cern Workshop on Charm Production in A+A Collisions