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Is early thermalization achieved only near midrapidity in Au + Au collisions at sNN=130GeV?

Tetsufumi Hirano
Phys. Rev. C 65, 011901(R) – Published 3 December 2001
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Abstract

The pseudorapidity dependence of elliptic flow in Au+Au collisions at 130AGeV is studied within a full three-dimensional hydrodynamic model in the light-cone coordinate. First, we prepare two initial conditions in the hydrodynamic model for analyzing elliptic flow. Both initial conditions lead to reasonable agreement with single particle spectra in central and semicentral collisions. Second, by using these hydrodynamic simulations, we compare elliptic flow as a function of pseudorapidity with experimental data recently measured by the PHOBOS Collaboration. Our results are in agreement with experimental data only near midrapidity. This suggests that thermalization in the early stage of collisions is not achieved in forward and backward rapidity regions.

  • Received 3 August 2001

DOI:https://doi.org/10.1103/PhysRevC.65.011901

©2001 American Physical Society

Authors & Affiliations

Tetsufumi Hirano*

  • Physics Department, University of Tokyo, Tokyo 113-0033, Japan

  • *Email address: hirano@nt.phys.s.u-tokyo.ac.jp

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Vol. 65, Iss. 1 — January 2002

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