Exposing the Noncollectivity in Elliptic Flow

Abstract

We show that backward-forward elliptic anisotropy correlation provides an experimentally accessible observable which distinguishes between collective and non-collective contributions to the observed elliptic anisotropy $v_2$ in relativistic heavy ion collisions. The measurement of this observable will reveal the momentum scale at which collective expansion seizes and where the elliptic anisotropy is dominated by (semi)-hard processes.

4 pages, 3 figures. Final version with minor changes. Published as: Phys. Rev. Lett. 103, 042302 (2009)

References in corpus (30)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
• Flow at the SPS and RHIC as a Quark Gluon Plasma Signature
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• The Effect of Shear Viscosity on Spectra, Elliptic Flow, and HBT Radii
• On the Strongly-Interacting Low-Viscosity Matter Created in Relativistic Nuclear Collisions
• Elliptic flow at SPS and RHIC: from kinetic transport to hydrodynamics
• Simulating elliptic flow with viscous hydrodynamics
• Suppression of elliptic flow in a minimally viscous quark-gluon plasma
• A calculation of the shear viscosity in SU(3) gluodynamics
• High $p_T$ Azimuthal Asymmetry in Non-central A+A at RHIC
• Has the QCD Critical Point been Signaled by Observations at RHIC ?
• Antiflow of Nucleons at the Softest Point of the EoS
• Third flow component as QGP signal
• Perturbative QCD Calculations of Elliptic Flow and Shear Viscosity in Au+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• Strongly coupled plasma with electric and magnetic charges
• Jet Quenching and Azimuthal Anisotropy of Large $p_T$ Spectra in Non-central High-energy Heavy-ion Collisions
• Angular Dependence of Jet Quenching Indicates Its Strong Enhancement Near the QCD Phase Transition
• Determination of the reaction plane in ultrarelativistic nuclear collisions
• The Azimuthal Asymmetry at large p_t seem to be too large for a ``Jet Quenching''
• A Detailed Study of High-pT Neutral Pion Suppression and Azimuthal Anisotropy in Au+Au Collisions at \sqrt{s_{NN}} = 200 GeV
• Magnetic Component of Quark-Gluon Plasma is also a Liquid!
• What do lattice baryonic susceptibilities tell us about quarks, diquarks and baryons at $T>Tc$?
• Azimuthal Dependence of Pion Interferometry at the AGS
• Tilted Pion Sources from Azimuthally Sensitive HBT Interferometry
• Incident-energy and system-size dependence of directed flow

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• Statistical Origin of Constituent-Quark Scaling in the QGP hadronization
• Fluidity and supercriticality of the QCD matter created in relativistic heavy ion collisions
• System evolution of forward-backward multiplicity correlations in a multi-phase transport model
• Jet Tomography of Harmonic Fluctuations in the Initial Condition of Heavy Ion Collisions
• Exact Relativistic Ideal Hydrodynamical Solutions in (1+3)D with Longitudinal and Transverse Flows
• The Study of Noncollectivity by the Forward-Backward Multiplicity Correlation Function
• On Analytic Solutions of (1+3)D Relativistic Ideal Hydrodynamic Equations
• Elliptic Flow at Large Viscosity
• Effect of an anisotropic escape mechanism on elliptic flow in relativistic heavy-ion collisions
• Azimuthal instabilities of the Gribov-Levin-Ryskin equation
• Facets of the QCD Phase-Diagram
• Forward-backward elliptic anisotropy correlation in parton cascade