$J/\psi$ suppression in Au+Au collisions at RHIC : colour screening scenario in the bag model at variable participant numbers

Abstract

We have modified the colour screening theory of Chu and Matsui by properly incorporating bag model equation of state for quark gluon plasma (QGP). We have also chosen the pressure parametrization rather than parametrizing energy density in the transverse plane. We assume that the QGP dense medium is expanding in the longitudinal direction obeying Bjorken boost invariant scaling law. Sequential melting of ${\chi }_c$, ${\psi }^{{}^{\prime }}$ and $J/\psi$ is also considered in this scenario. We have applied above formulation to the recent PHENIX experimental data of $J/\psi$ suppression in Au + Au collisions at RHIC. We find that the model gives a good description of data at mid-rapidity in terms of survival probability versus number of participants without any necessity of implementing (3+1)-dimensional expansion of the deconfined medium.

arXiv comment13 pages, 2 figures

References in corpus (24)

• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• Collective flow and two-pion correlations from a relativistic hydrodynamic model with early chemical freeze out
• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• A new measurement of J/psi suppression in Pb-Pb collisions at 158 GeV per nucleon
• Nuclear Modification of Electron Spectra and Implications for Heavy Quark Energy Loss in Au+Au Collisions at sqrt(s_NN)=200 GeV
• Colour Deconfinement and Quarkonium Binding
• Parton Equilibration in Relativistic Heavy Ion Collisions
• Systematic Studies of the Centrality and sqrt(s_NN) Dependence of dE_T/deta and dN_ch/deta in Heavy Ion Collisions at Mid-rapidity
• Measurement of high-p_T Single Electrons from Heavy-Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV
• Sequential charmonium dissociation
• Is early thermalization achieved only near midrapidity at RHIC ?
• Results from the Relativistic Heavy Ion Collider
• In-Medium Effects on Charmonium Production in Heavy-Ion Collisions
• Recent results in relativistic heavy ion collisions: from ``a new state of matter'' to "the perfect fluid"
• Non-saturation of the J/psi suppression at large transverse energy in the comovers approach
• J/Psi Suppression in an Equilibrating Parton Plasma
• Momentum spectra of charmonium produced in a quark-gluon plasma
• J/psi Production and Nuclear Effects for d+Au and p+p Collisions at sqrt(s_NN) = 200 GeV
• Screening of initial parton production in ultrarelativistic heavy-ion collisions
• Charmonium suppression in heavy-ion collisions
• Determination of equation of state of quark matter from $J/\psi$ and ${\rm Y}$ suppression at RHIC and LHC
• $J/\psi$ Gluonic Dissociation Revisited : I. Fugacity, Flux And Formation Time Effects
• $J/\psi$ Gluonic Dissociation Revisited : II. Hydrodynamic Expansion Effects
• J/ψ$ Gluonic Dissociation Revisited : III. Effects of Transverse Hydrodynamic Flow

Cited by in corpus (12)

• Colour screening scenario for quarkonia suppression in a quasiparticle model compared with data obtained from experiments at the CERN SPS, BNL RHIC, and CERN LHC
• Unified Description of Charmonium Suppression in Quark-Gluon Plasma Medium at RHIC and LHC Energies
• Charmonium suppression in ultra-relativistic proton-proton collisions at LHC energies: A hint for QGP in small systems
• Centrality and transverse momentum dependent suppression of ${\rm Y}(1S)$ and ${\rm Y}(2S)$ in p$-$Pb and Pb$-$Pb collisions at the CERN Large Hadron Collider
• Bottomonium suppression at $\sqrt{s_{NN}}=2.76$ TeV using model based on color screening and gluonic dissociation with collisional damping
• Bottomonium suppression in PbPb collision at energies available at the CERN large hadron collider
• Temperature dependent formation-time approach for ${\rm Y}$ suppression at energies available at the CERN Large Hadraon Collider
• Upsilon suppression at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider in a modified color screening scenario
• pQCD approach to Charmonium regeneration in QGP at the LHC
• $\psi (2S)$ enhancement in p-Pb collision as an indication of QGP formation at the LHC
• Effect of temperature gradient on heavy quark anti-quark potential using gravity dual model
• Charmonium suppression in a baryon rich quark-gluon plasma