Transverse Expansion and High $p_T$ Azimuthal Asymmetry at RHIC

Abstract

Rapid 3+1D transverse plus Bjorken collective expansion in $A+A$ collisions at ultra-relativistic energies is shown to reduce substantially the azimuthal asymmetry resulting from jet quenching. While the azimuthal asymmetry in non-central collisions, $v_2(p_T>2GeV/c)\sim 0.15$ reported by STAR at RHIC, can be accounted for by spatially anisotropic jet energy loss through a 1+1D expanding gluon plasma with $d{N}^g/dy\sim 1000$, we show that if rapid transverse collective expansion of the plasma is assumed, then the asymmetry due to jet quenching may be reduced below the observed level. Possible implications of this effect are discussed.

Journal version: 1 figure added, references added. 6 pages, 4 figures

References in corpus (4)

• Elliptic flow at SPS and RHIC: from kinetic transport to hydrodynamics
• High $p_T$ Azimuthal Asymmetry in Non-central A+A at RHIC
• Pion Interferometry of $\sqrt{s_{NN}}=130$ GeV Au+Au Collisions at RHIC
• On the Energy Loss of High Energy Quarks in a Finite-Size Quark-Gluon Plasma

Cited by in corpus (80)

• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Elliptic flow at large transverse momenta from quark coalescence
• Collective flow and two-pion correlations from a relativistic hydrodynamic model with early chemical freeze out
• Parton coalescence at RHIC
• Calculating Quenching Weights
• High-p_T Tomography of d+Au and Au+Au at SPS, RHIC, and LHC
• Jet Tomography of Hot and Cold Nuclear Matter
• Jet Tomography of Au+Au Reactions Including Multi-gluon Fluctuations
• Systematic Comparison of Jet Energy-Loss Schemes in a realistic hydrodynamic medium
• Azimuthal anisotropy and correlations in the hard scattering regime at RHIC
• Energy Loss of Leading Hadrons and Direct Photon production in Evolving Quark-Gluon Plasma
• Influence of Bottom Quark Jet Quenching on Single Electron Tomography of Au+Au
• High-$p_T$ Hadron Spectra, Azimuthal Anisotropy and Back-to-Back Correlations in High-energy Heavy-ion Collisions
• Quark Coalescence and Elliptic Flow of Charm Hadrons
• A theory of jet shapes and cross sections: from hadrons to nuclei
• The Azimuthal Asymmetry at large p_t seem to be too large for a ``Jet Quenching''
• Hydrodynamic afterburner for the Color Glass Condensate and the parton energy loss
• A Detailed Study of High-pT Neutral Pion Suppression and Azimuthal Anisotropy in Au+Au Collisions at \sqrt{s_{NN}} = 200 GeV
• Jet Quenching from QCD Evolution
• Reaction Operator Approach to Multiple Elastic Scatterings
• Interplay between soft and hard hadronic components for identified hadrons in relativistic heavy ion collisions
• Effective field theory approach to open heavy flavor production in heavy-ion collisions
• Jet Quenching and the p-bar >= pi- Anomaly at RHIC
• Azimuthal jet flavor tomography with CUJET2.0 of nuclear collisions at RHIC and LHC
• Collective phenomena in non-central nuclear collisions
• 3D Jet Tomography of Twisted Strongly Coupled Quark Gluon Plasmas
• Medium induced jet absorption at relativistic heavy ion collisions
• Ab Initio Coupling of Jets to Collective Flow in the Opacity Expansion Approach
• Jet tomography
• Energy Dependence of Jet Quenching and Life-time of the Dense Matter in High-energy Heavy-ion Collisions
• Elliptic Flow from Minijet Production in Heavy Ion Collisions
• Constraints on the Path-Length Dependence of Jet Quenching in Nuclear Collisions at RHIC and LHC
• Back-to-back correlations of high p_T hadrons in relativistic heavy ion collisions
• The Fluid Nature of Quark-Gluon Plasma
• Energy loss in high energy heavy ion collisions from the Hydro+Jet model
• Jet broadening in dense inhomogeneous matter
• Charm elliptic flow from quark coalescence dynamics
• Jet quenching at intermediate RHIC energies
• Particle dependence of elliptic flow in Au+Au collisions at $\sqrt{s_{NN}}=$ 200 GeV
• Interplay between core and corona components in high-energy nuclear collisions
• Pseudorapidity dependence of parton energy loss in relativistic heavy ion collisions
• Jet Broadening in Flowing Matter -- Resummation
• Azimuthal asymmetry of J/Psi suppression in non-central heavy-ion collisions
• Heavy quarks at RHIC from parton transport theory
• Hydrodynamic models
• Bulk medium evolution has considerable effects on jet observables
• The QGP Discovered at RHIC
• Jet quenching in anisotropic flowing matter
• The Mini-Jet Scale and Energy Loss at RHIC in the HIJING and RQMD Models
• Elliptic Flow: A Study of Space-Momentum Correlations In Relativistic Nuclear Collisions
• Azimuthal Anisotropy of Charged and Identified High $p_T$ Hadrons in Au+Au Collisions at RHIC
• Asymmetric transverse momentum broadening in an inhomogeneous medium
• Correlation Functions and Cumulants in Elliptic Flow Analysis
• Thoughts on Non-Perturbative Thermalization and Jet Quenching in Heavy Ion Collisions
• Kaon and Lambda Production at Intermediate $p_T$: Insights into the Hadronization of the Bulk Partonic Matter Created in Au+Au Collisions at RHIC
• High Transverse Momentum Results from the STAR Collaboration
• A method for analysing the jet azimuthal anisotropy in ultrarelativistic heavy ion collisions
• Meson and baryon elliptic flow at high pT from parton coalescence
• Triple-quark elastic scatterings and thermalization
• Flavoring the Quark-Gluon Plasma with Charm
• A study on the anomaly of $p$ over $\pi$ ratios in $Au+Au$ collisions with jet quenching
• Nonlinear dynamics of soft boson collective excitations in hot QCD plasma II: plasmon -- hard-particle scattering and energy losses
• Hydrodynamic afterburner for the CGC at RHIC
• Nuclear modification factor in an anisotropic {\em Quark-Gluon-Plasma}
• qqqbar to qqqbar and qqbarqbar to qqbarqbar Elastic Scatterings and Thermalization of Quark Matter and Antiquark Matter
• Jet Energy Loss in Hot and Dense Matter
• Important experimental observables at RHIC
• Recent results from parton cascade and microscopic transport
• Nuclear profile dependence of elliptic flow from a parton cascade
• Azimuthal distributions of radial momentum and velocity in relativistic heavy ion collisions
• Statistical analysis of pQCD energy loss across system size, flavor, $\sqrt{s_{NN}}$, and $p_T$
• Wake Potential in Strong Coupling Plasma from AdS/CFT Correspondence
• Energy loss of partons traversing a QGP fluid
• Evolution Effects on Parton Energy Loss with Detailed Balance
• $J/\psi$ production and elliptic flow parameter $v_2$ at LHC energy
• Effect of running coupling on photons from jet - plasma interaction in relativistic heavy ion collisions
• Jet Quenching with Parton evolution
• What are we learning from RHIC?
• Highlights from Heavy Ion Collisions at RHIC and the Acoustics of the Little Bangs
• Studying the QGP with Jets at the LHC and RHIC