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The Glauber model correction towards equilibrium

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Abstract

We introduce a pre-hydrodynamic correction to the commonly used Glauber model to bring the random scattering information to the initial condition of the hydrodynamic description for the heavy ion collisions. The results of this correction obviously shrink the value of the elliptic flow in the medium momentum region and move the corresponding momentum of the maximum v2 forwards to smaller pT value. These fit the experimental data quite well. This correction implies that the quark-gluon plasma (QGP) has reached the thermal equilibrium when the hydrodynamic expansion starts. Such a conclusion of quick-equilibrium confirms the conclusion that QGP is a strongly interacting system.

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Authors and Affiliations

  1. Department of Physics, Nanjing University, Nanjing, 210093, China

    AMeng Zhao, HongShi Zong & WeiMin Sun

  2. Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing, 210093, China

    HongShi Zong & WeiMin Sun

Authors
  1. AMeng Zhao
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  2. HongShi Zong
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  3. WeiMin Sun
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Correspondence to HongShi Zong.

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Zhao, A., Zong, H. & Sun, W. The Glauber model correction towards equilibrium. Sci. China Phys. Mech. Astron. 55, 2049–2056 (2012). https://doi.org/10.1007/s11433-012-4894-3

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  • DOI: https://doi.org/10.1007/s11433-012-4894-3

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