Charged and strange hadron elliptic flow in Cu+Cu collisions at [sqrt]sNN=62.4 and 200 GeV
Name
Abelev-2010-Charged and strange.pdf
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Author(s)
Surrow, Bernd
Balewski, Jan T.
Betancourt, Michael Joseph
Corliss, Ross Cameron
Hays-Wehle, James Prewitt
Jones, Christopher LaDon
Kocoloski, Adam Philip
Leight, William Axel
Sakuma, Tai
Seele, Joseph Patrick
Alternative Title
Charged and strange hadron elliptic flow in Cu+Cu collisions at √sNN=62.4 and 200 GeV
Date Issued
April 2010
Journal
Physical Review C
Publisher
American Physical Society
Citation
STAR Collaboration et al. “Charged and strange hadron elliptic flow in Cu+Cu collisions at [sqrt]sNN=62.4 and 200 GeV.” Physical Review C 81.4 (2010): 044902. © 2010 The American Physical Society.
Version
Final published version
Abstract
We present the results of an elliptic flow, v2, analysis of Cu+Cu collisions recorded with the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider at √sNN=62.4 and 200 GeV. Elliptic flow as a function of transverse momentum, v2(pT), is reported for different collision centralities for charged hadrons h± and strangeness-ontaining hadrons KS0, Λ, Ξ, and ϕ in the midrapidity region |η|<1.0. Significant reduction in systematic uncertainty of the measurement due to nonflow effects has been achieved by correlating particles at midrapidity, |η|<1.0, with those at forward rapidity, 2.5<|η|<4.0. We also present azimuthal correlations in p+p collisions at √s=200 GeV to help in estimating nonflow effects. To study the system-size dependence of elliptic flow, we present a detailed comparison with previously published results from Au+Au collisions at √sNN=200 GeV. We observe that v2(pT) of strange hadrons has similar scaling properties as were first observed in Au+Au collisions, that is, (i) at low transverse momenta, pT<2 GeV/c, v2 scales with transverse kinetic energy, mT-m, and (ii) at intermediate pT, 2
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.81.044902
