Measurement of single electron event anisotropy in Au+Au collisions at √sNN = 200 GeV

Physical Review C - Nuclear Physics Volume 72 Issue 2 Page 024901-1-024901-10 published_at 2005-10-10
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Title ( eng )
Measurement of single electron event anisotropy in Au+Au collisions at √sNN = 200 GeV
Creator
PHENIX Collaboration
Enokizono Akitomo
Hachiya Takashi
Kohama Takeshi
Nakamura Tomoaki
Source Title
Physical Review C - Nuclear Physics
Volume 72
Issue 2
Start Page 024901-1
End Page 024901-10
Abstract
The transverse momentum dependence of the azimuthal anisotropy parameter v2, the second harmonic of the azimuthal distribution, for electrons at midrapidity (|η|<0.35) has been measured with the PHENIX detector in Au+Au collisions at √sNN=200 GeV. The measurement was made with respect to the reaction plane defined at high rapidities (|η|=3.1-3.9). From the result we have measured the v2 of electrons from heavy flavor decay after subtraction of the v2 of electrons from other sources such as photon conversions and Dalitz decay from light neutral mesons. We observe a nonzero single electron v2 with a 90% confidence level in the intermediate-pT 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.
Keywords
nuclei with mass number 190 to 219
heavy ion-nucleus reactions
nuclear matter
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 2005-10-10
Rights
Copyright (c) 2005 The American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0556-2813
[DOI] 10.1103/PhysRevC.72.024901
[NCID] AA00773613
[DOI] http://dx.doi.org/10.1103/PhysRevC.72.024901