$J/\psi$ suppression and $p_T$ spectra in RHIC and LHC energy collisions

Abstract

In a hydrodynamic model, we have studied $J/\psi$ production in Au+Au/Cu+Cu collisions at RHIC energy $\sqrt{s}$=200 GeV. At the initial time, $J/\psi$'s are randomly distributed in the fluid. As the fluid evolve in time, the free streaming $J/\psi$'s are dissolved if the local fluid temperature exceeds a threshold temperature $T_{J/\psi }$. Sequential melting of charmonium states (${\chi }_c$, $\psi \prime$ and $J/\psi$), with melting temperatures $T_{{\chi }_c}=T_{\psi \prime }\approx 1.2T_c$, $T_{J/\psi }\approx 2T_c$ and feed-down fraction $F\approx 0.3$, explains the PHENIX data on the centrality dependence of $J/\psi$ suppression in Au+Au collisions. $J/\psi$ $p_T$ spectra and the nuclear modification factor in Au+Au collisions are also well explained in the model. The model however over predict centrality dependence of $J/\psi$ suppression in Cu+Cu collisions by 20-30%. The $J/\psi$ $p_T$ spectra are under predicted by 20-30%. The model predict that in central Pb+Pb collisions at LHC energy, $\sqrt{s}$=5500 GeV, $J/\psi$'s are suppressed by a factor of $\sim$ 10. The model predicted $J/\psi$ $p_T$ distribution in Pb+Pb collisions at LHC is similar to that in Au+Au collisions at RHIC.

arXiv comment8 pages, 7 figures

References in corpus (28)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• Enhanced J/Psi Production in Deconfined Quark Matter
• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• $J/\psi$ and ${\eta }_c$ in the Deconfined Plasma from Lattice QCD
• Heavy-Quark Probes of the Quark-Gluon Plasma at RHIC
• J/psi Production vs Transverse Momentum and Rapidity in p+p Collisions at sqrt(s) = 200 GeV
• J/Psi Suppression in Pb-Pb Collisions: A Hint of Quark-Gluon Plasma Production?
• J/psi Production and Nuclear Effects for d+Au and p+p Collisions at sqrt(s_NN) = 200 GeV
• Cold Nuclear Matter Effects on J/Psi as Constrained by Deuteron-Gold Measurements at sqrt(s_NN) = 200 GeV
• Erratum: Cold Nuclear Matter Effects on $J/\psi$ Production as Constrained by Deuteron-Gold Measurements at sqrt(s_NN) = 200 GeV [Phys. Rev. C77, 024912 (2008)]
• Quarkonium Binding and Dissociation: The Spectral Analysis of the QGP
• Charmonium and open charm production in nuclear collisions at SPS/FAIR energies and the possible influence of a hot hadronic medium
• Transverse energy fluctuations and the pattern of J/Psi suppression in Pb-Pb collisions
• J/psi production from proton-proton collisions at sqrt(s) = 200 GeV
• J/Psi Production in Au-Au Collisions at sqrt(s_NN) = 200 GeV at the Relativistic Heavy Ion Collider
• The widths of quarkonia in quark gluon plasma
• J-ψProduction via χ_c Decays in 920 GeV pA Interactions
• Baseline Cold Matter Effects on J/psi Production in AA Collisions
• RHIC Results on J/Psi
• Centrality Dependence of $J/\psi$ Production in Au+Au and Cu+Cu Collisions by the PHENIX Experiment at RHIC
• $J/\psi$ production in Au+Au/Cu+Cu collisions at ${\sqrt{s}}_{NN}$=200 GeV and the threshold model
• $J/\psi$ suppression in the threshold model and QGP formation time
• $J/\psi$ suppression in the threshold model at RHIC and LHC energy
• Sequential melting of charmonium states in an expanding Quark Gluon Plasma and $J/\psi$ suppression at RHIC and LHC energy collisions

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