Energy and system size dependence of elliptic flow: using rapidity gaps to suppress non-flow contribution

Abstract

In this talk I present new STAR results on measurements of integrated elliptic flow at midrapidity in Au+Au and Cu+Cu collisions at $\sqrt{s_{NN}}=$200 and 62 GeV energies. These results have been obtained from azimuthal correlations between particles in the main STAR TPC and two forward TPCs, and are to a large extent free from so-called non-flow correlations. These results along with the previously reported values of ``participant'' eccentricity taking into account eccentricity fluctuations are used for testing the $v_2/\eps$ scaling, which is found to hold relatively well.

4 pages. Talk at CIPANP 2006, 9th Conference on the Intersections of Particle and Nuclear Physics, May 30-June 3, 2006, Rio Grande, Puerto Rico

References in corpus (3)

• System size, energy and pseudorapidity dependence of directed and elliptic flow at RHIC
• Eccentricity fluctuations and its possible effect on elliptic flow measurements
• Toward the energy and the system size dependece of elliptic flow: working on flow fluctuations

Cited by in corpus (17)

• Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV
• Multiplicity scaling in ideal and viscous hydrodynamics
• Collision Energy Dependence of Viscous Hydrodynamic Flow in Relativistic Heavy-Ion Collisions
• Early collective expansion: Relativistic hydrodynamics and the transport properties of QCD matter
• Energy and system size dependence of charged particle elliptic flow and $v_2/\eps$ scaling
• Hydrodynamic radial and elliptic flow in heavy-ion collisions from AGS to LHC energies
• Quark-Gluon Matter
• Elliptic flow fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Universal Centrality and Collision Energy Trends for $v_2$ Measurements From 2D Angular Correlations
• Causal Viscous Hydrodynamics for Relativistic Heavy Ion Collisions
• Elliptic flow fluctuations and correlations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Causal relativistic hydrodynamics for viscous fluids
• PHENIX Studies of the Scaling Properties of Elliptic Flow at RHIC
• Knudsen number, ideal hydrodynamic limit for elliptic flow and QGP viscosity in $\sqrt{s}$=62 and 200 GeV Cu+Cu/Au+Au collisions
• Initial eccentricity and constituent quark number scaling of elliptic flow in ideal and viscous dynamics
• Event-plane flow analysis without non-flow effects
• Utilizing maximum likelihood estimator for flow analysis