Scaling Characteristics of Azimuthal Anisotropy at RHIC

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.

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

References in corpus (5)

• The role of elliptic flow correlations in the discovery of the sQGP at RHIC
• Universal scaling of the elliptic flow at RHIC
• Universal scaling of the elliptic flow data at RHIC
• Anisotropic Flow in sqrt(s_NN) = 200 GeV Cu+Cu and Au+Au collisions at PHENIX
• Azimuthal Anisotropy of Identified Hadrons in 200 GeV Au+Au Collisions

Cited by in corpus (3)

• Strange hadron production in heavy ion collisions from SPS to RHIC
• Highlights from STAR: probing the early medium in heavy ion collisions
• Footprints of the (Nearly) Perfect Liquid