Scaling Characteristics of Azimuthal Anisotropy at RHIC

Michael Issah; Arkadij Taranenko

Scaling Characteristics of Azimuthal Anisotropy at RHIC

Nuclear Experiment 2007-05-23 v1

Authors: Michael Issah , Arkadij Taranenko

Abstract

Recent differential measurements of elliptic flow are used to probe several hydrodynamic scaling predictions. Eccentricity scaling is observed for Cu+Cu and Au+Au collisions at $\sqrt{s_{NN}}=~200$ GeV, suggesting essentially complete thermalization of the high energy density matter produced in these collisions. An estimate of the speed of sound is also obtained from the eccentricity scaled elliptic flow. The predicted mass scaling is observed for particles with transverse kinetic energy KE $_T$ up to $\sim 1$ GeV. For KE $_T$ values above $\sim 1$ GeV, valence quark number scaling compatible with partonic degrees of freedom is observed.

Keywords

elliptic flow azimuthal anisotropy rhic eccentricity scaling mass scaling quark number scaling hydrodynamics

Cite

@article{arxiv.nucl-ex/0604011,
  title  = {Scaling Characteristics of Azimuthal Anisotropy at RHIC},
  author = {Michael Issah and Arkadij Taranenko},
  journal= {arXiv preprint arXiv:nucl-ex/0604011},
  year   = {2007}
}

Comments

Presented at 22nd Winter Workshop on Nuclear Dynamics, San Diego, California, 11-19 March 2006

Scaling Characteristics of Azimuthal Anisotropy at RHIC

Abstract

Keywords

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