Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

8-2005

Journal or Book Title

Physical Review C

Volume

72

Issue

2

First Page

024901

DOI

10.1103/PhysRevC.72.024901

Abstract

The transverse momentum dependence of the azimuthal anisotropy parameter v(2), the second harmonic of the azimuthal distribution, for electrons at midrapidity (vertical bar eta vertical bar < 0.35) has been measured with the PHENIX detector in Au+Au collisions at root s(NN) = 200 GeV. The measurement was made with respect to the reaction plane defined at high rapidities (vertical bar eta vertical bar = 3.1-3.9). From the result we have measured the v(2) of electrons from heavy flavor decay after subtraction of the v(2) of electrons from other sources such as photon conversions and Dalitz decay from light neutral mesons. We observe a nonzero single electron v(2) with a 90% confidence level in the intermediate-p(T) region. The precision of the present data set does not permit us to conclude definitively that heavy quarks exhibit thermalization with the transverse flow of the bulk matter.

Comments

This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Measurement of single electron event anisotropy in Au+ Au collisions at s NN= 200 GeV." Physical Review C 72, no. 2 (2005): 024901. DOI: 10.1103/PhysRevC.72.024901. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Included in

Nuclear Commons

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