Influence of hydrodynamics on the interpretation of the high $p_T$ hadron suppression at RHIC

Abstract

A hybrid parameterization including contributions of hydrodynamics and of expectations from the spectral shape observed in p+p collisions is introduced. This parameterization can successfully describe identified hadron spectra over a wide range of $p_T$ in Au+Au reactions at $\sqrt{s_{NN}}$ = 200 GeV for all centralities. The parameters of the hydrodynamic source compare reasonably well to other attempts to describe the spectra. The description is obtained using one universal suppression factor of the hard scattering component independent of $p_T$ and hadron species. For the fit results obtained the observed nuclear modification factor for the different particles converges to a universal suppression behavior for $p_T>6\mathrm{GeV}/c$.

arXiv commentupdated version (only typos), 16 pages, 10 figures

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Cited by in corpus (7)

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• Hydrodynamic description of ultrarelativistic heavy-ion collisions
• Radial flow afterburner for event generators and the baryon puzzle
• Rapidity dependence of the proton-to-pion ratio in Au+Au and p+p collisions at sqrt(s_NN) = 62.4 and 200 GeV
• The rapidity dependence of the proton-to-pion ratio in Au+Au and p+p collisions at sqrt(sNN) = 62.4 and 200 GeV
• Studying Intermediate pT Hadron Production with Fluctuations
• Statistical hadronization phenomenology in heavy ion collisions at SPS and RHIC energies