Flow measurements via two-particle azimuthal correlations in Au+Au collisions at √sNN=130 GeV

Adcox, K. ; Kapoor, S. S. ; et., al (2002) Flow measurements via two-particle azimuthal correlations in Au+Au collisions at √sNN=130 GeV Physical Review Letters, 89 (21). 212301_1-212301_6. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v89/i21/e212301

Related URL: http://dx.doi.org/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 (√sNN=130 GeV). The measurements permit determination of elliptic flow without event-by-event estimation of the reaction plane. The extracted elliptic flow values (v2) 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 ε, the scaled elliptic flow shows little or no dependence on centrality for charged hadrons with relatively low pT. A breakdown of this ε scaling is observed for charged hadrons with pT>1.0 GeV/c.

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Source:Copyright of this article belongs to American Physical Society.
ID Code:16794
Deposited On:15 Nov 2010 13:16
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