200 A GeV Au+Au Collisions Serve a Nearly Perfect Quark-Gluon Liquid

Huichao Song, Steffen A. Bass, Ulrich Heinz, Tetsufumi Hirano, and Chun Shen
Phys. Rev. Lett. 106, 192301 – Published 9 May 2011; Erratum Phys. Rev. Lett. 109, 139904 (2012)

Abstract

A new robust method to extract the specific shear viscosity (η/s)QGP of a quark-gluon plasma (QGP) at temperatures Tc<T2Tc from the centrality dependence of the eccentricity-scaled elliptic flow v2/ε measured in ultrarelativistic heavy-ion collisions is presented. Coupling viscous fluid dynamics for the QGP with a microscopic transport model for hadronic freeze-out we find for 200 A GeV Au+Au collisions that v2/ε is a universal function of multiplicity density (1/S)(dNch/dy) that depends only on the viscosity but not on the model used for computing the initial fireball eccentricity ε. Comparing with measurements we find 1<4π(η/s)QGP<2.5 where the uncertainty range is dominated by model uncertainties for the values of ε used to normalize the measured v2.

  • Figure
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  • Received 11 November 2010

DOI:https://doi.org/10.1103/PhysRevLett.106.192301

© 2011 American Physical Society

Erratum

Erratum: 200 A GeV Au+Au Collisions Serve a Nearly Perfect Quark-Gluon Liquid [Phys. Rev. Lett. 106, 192301 (2011)]

Huichao Song, Steffen A. Bass, Ulrich Heinz, Tetsufumi Hirano, and Chun Shen
Phys. Rev. Lett. 109, 139904 (2012)

Authors & Affiliations

Huichao Song1,2, Steffen A. Bass3, Ulrich Heinz2, Tetsufumi Hirano4,1, and Chun Shen2

  • 1Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 2Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
  • 3Department of Physics, Duke University, Durham, North Carolina 27708, USA
  • 4Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan

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Issue

Vol. 106, Iss. 19 — 13 May 2011

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