Recombinant Charmonium in strongly coupled Quark-Gluon Plasma

Abstract

We update our previous work of a Langevin-with-interaction model for charmonium in heavy-ion collisions, by considering the effect due to recombination. We determine the contribution to J/psi yields from charm-anticharm pairs whose constituent quarks originate from two different hard processes. Like the surviving J/psi states, the recombinant J/psi also undergo both a stochastic interaction, determined by a hydrodynamical simulation of the heavy-ion collision, and an interaction determined by the heavy quark-antiquark potentials measured on the lattice for appropriate temperatures. From the results of these simulations, we determine both the direct and the recombinant contribution to the J/psi yields for RHIC conditions, and find that for central collisions, between 30% and 50% of the J/psi yield is due to recombinant production. We compare our results with other models and look for how the recombinant contribution differs from the surviving contribution in the differential p_t yields. Including the recombinant contribution improves the agreement with the latest analysis of charmonium at RHIC, which shows an absence of anomalous suppression except in the most central collisions.

5 pages, 4 figures

References in corpus (3)

• PYTHIA 6.4 Physics and Manual
• Charmonium in strongly coupled quark-gluon plasma
• Forward and midrapidity charmonium production at RHIC

Cited by in corpus (20)

• Heavy quarkonium: progress, puzzles, and opportunities
• Thermal Bottomonium Suppression at RHIC and LHC
• Quarkonia in the Quark Gluon Plasma
• Heavy-flavor production and medium properties in high-energy nuclear collisions - What next?
• Heavy quark bound states in a quark-gluon plasma: dissociation and recombination
• Quarkonium at finite temperature: Towards realistic phenomenology from first principles
• Bottomonium suppression using a lattice QCD vetted potential
• Supersymmetry and Dark Matter in Light of LHC 2010 and Xenon100 Data
• Heavy quarkonium production in a strong magnetic field
• MARTINI for heavy quarks: initialization, parton evolution, and hadronization with event generation
• Open Quantum Systems for Quarkonia
• Approach to equilibrium of quarkonium in quark-gluon plasma
• Should we still believe in constrained supersymmetry?
• Fate of in-medium heavy quarks via a Lindblad equation
• Thermal Heavy Quark Self-Energy from Euclidean Correlators
• Static $\bar{Q}Q$ Potentials and the Magnetic Component of QCD Plasma near $T_c$
• Formation, dissociation and regeneration of charmonia within microscopic Langevin simulations
• Sequential bottomonium production at high temperatures
• Hadronization effects on the baryon-strangeness correlation in quark combination models
• Heavy Quark and Quarkonium Transport in High Energy Nuclear Collisions