Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

6-2005

Journal or Book Title

Physical Review Letters

Volume

94

Issue

23

First Page

232302

DOI

10.1103/PhysRevLett.94.232302

Abstract

New measurements are presented for charged hadron azimuthal correlations at midrapidity in Au+Au collisions at root s(NN)=62.4 and 200 GeV. They are compared to earlier measurements obtained at root s(NN)=130 GeV and in Pb+Pb collisions at root s(NN)=17.2 GeV. Sizeable anisotropies are observed with centrality and transverse momentum (p(T)) dependence characteristic of elliptic flow (v(2)). For a broad range of centralities, the observed magnitudes and trends of the differential anisotropy, v(2)(p(T)), change very little over the collision energy range root s(NN)=62-200 GeV, indicating saturation of the excitation function for v(2) at these energies. Such a saturation may be indicative of the dominance of a very soft equation of state for root s(NN)similar to 60-200 GeV.

Comments

This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, A. Al-Jamel, J. Alexander et al. "Saturation of Azimuthal Anisotropy in Au+ Au Collisions at s N N= 62–200 GeV." Physical review letters 94, no. 23 (2005): 232302. DOI: 10.1103/PhysRevLett.94.232302. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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