Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

11-2002

Journal or Book Title

Physical Review Letters

Volume

89

Issue

21

First Page

212301

DOI

10.1103/PhysRevLett.89.212301

Abstract

Two-particle azimuthal correlation functions are presented for charged hadrons produced in Au + Au collisions at the Relativistic Heavy Ion Collider (roots(NN) = 130 GeV). The measurements permit determination of elliptic flow without event-by-event estimation of the reaction plane. The extracted elliptic flow values (upsilon(2)) show significant sensitivity to both the collision centrality and the transverse momenta of emitted hadrons, suggesting rapid thermalization and relatively strong velocity fields. When scaled by the eccentricity of the collision zone epsilon, the scaled elliptic flow shows little or no dependence on centrality for charged hadrons with relatively low p(T). A breakdown of this epsilon scaling is observed for charged hadrons with p(T) > 1.0 GeV/c.

Comments

This article is published as Adcox, K., S. S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, L. Aphecetche, Y. Arai et al. "Flow Measurements via Two-Particle Azimuthal Correlations in Au+Au Collisions at sNN= 130 GeV." Physical Review Letters 89, no. 21 (2002): 212301. DOI:10.1103/PhysRevLett.89.212301. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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