Elliptical flow -- a signature for early pressure in ultrarelativistic nucleus-nucleus collisions

Abstract

Elliptical energy flow patterns in non-central Au(11.7AGeV) on Au reactions have been studied employing the RQMD model. The strength of these azimuthal asymmetries is calculated comparing the results in two different modes of RQMD (mean field and cascade). It is found that the elliptical flow which is readily observable with current experimental detectors may help to distinguish different reasonable expansion scenarios for baryon-dense matter. The final asymmetries are very sensitive to the pressure at maximum compression, because they involve a partial cancelation between early squeeze-out and subsequent flow in the reaction plane. This cancelation can be expected to occur in a broad energy region covered by the current heavy ion fixed-target programs at BNL and at CERN.

14 pages LaTeX including 3 postscript figures

References in corpus (6)

• Formation of superdense hadronic matter in high energy heavy-ion collisions
• Flavor Production in Pb(160AGeV) on Pb Collisions: Effect of Color Ropes and Hadronic Rescattering
• Hydrodynamics near the QCD Phase Transition: Looking for the Longest-Lived Fireball
• Observation of Anisotropic Event Shapes and Transverse Flow in Au+Au Collisions at AGS Energy
• Temperatures and Non-ideal Expansion in Ultrarelativistic Nucleus-Nucleus Collisions
• Comparison of Experimental Data to the Relativistic Quantum Molecular Dynamics Model For Si+Au Collisions at 14.6 A GeV/c

Cited by in corpus (179)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Determination of the Equation of State of Dense Matter
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Methods for analyzing anisotropic flow in relativistic nuclear collisions
• Radial and elliptic flow at RHIC: further predictions
• Anisotropic transverse flow and the quark-hadron phase transition
• Elliptic flow at SPS and RHIC: from kinetic transport to hydrodynamics
• Elliptic flow from two- and four-particle correlations in Au + Au collisions at sqrt{s_{NN}} = 130 GeV
• Saturation of Elliptic Flow and the Transport Opacity of the Gluon Plasma at RHIC
• Directed and elliptic flow of charged pions and protons in Pb+Pb collisions at 40 and 158A GeV
• Partonic effects on the elliptic flow at relativistic heavy ion collisions
• Centrality dependence of multiplicity, transverse energy, and elliptic flow from hydrodynamics
• Space-time evolution of bulk QCD matter
• Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions
• The Importance of Correlations and Fluctuations on the Initial Source Eccentricity in High-Energy Nucleus-Nucleus Collisions
• Transverse flow and hadro-chemistry in Au+Au collisions at \sqrt{s_{NN}}=200 GeV
• Beam-Energy Dependence of Directed Flow of Protons, Antiprotons and Pions in Au+Au Collisions
• Elliptic Flow: Transition from out-of-plane to in-plane Emission in Au + Au Collisions
• Is early thermalization achieved only near midrapidity at RHIC ?
• Anisotropic flow
• Antiflow of Nucleons at the Softest Point of the EoS
• Constraining the Eq. of State of Super-Hadronic Matter from Heavy-Ion Collisions
• Azimuthal anisotropy and correlations in the hard scattering regime at RHIC
• Directed and Elliptic Flow in 158 GeV/Nucleon Pb + Pb Collisions
• Flow systematics from SIS to SPS energies
• Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production vs. Coalescence
• Disappearance of Elliptic Flow: A New Probe for the Nuclear Equation of State
• Equation of State, Radial Flow and Freeze-out in High Energy Heavy Ion Collisions
• Elliptic flow from a parton cascade
• Elliptic flow of thermal photons in relativistic nuclear collisions
• Proton and Pion Production Relative to the Reaction Plane in Au + Au Collisions at AGS Energies
• System-size independence of directed flow at the Relativistic Heavy-Ion Collider
• Novel rapidity dependence of directed flow in high energy heavy ion collisions
• Charm elliptic flow at RHIC
• Anisotropic flow in ultra-relativistic heavy ion collisions
• Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for $pp$ collisions at $\sqrt{s}=5.02$ and $13$ TeV and $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
• Dynamics of Ultra-Relativistic Nuclear Collisions with Heavy Beams: An Experimental Overview
• Last Call for RHIC Predictions
• Beam-Energy Dependence of Directed Flow of $\Lambda$, $\bar{\Lambda }$, $K^{\pm }$, $K_s^0$ and $\varphi$ in Au+Au Collisions
• Soft transverse expansion in Pb(158 AGeV) on Pb collisions: preequilibrium motion or 1st order phase transition?
• Flavor ordering of elliptic flows at high transverse momentum
• Anisotropy of flow and the order of phase transition in relativistic heavy ion collisions
• $\varphi$ and $\Omega$ production in relativistic heavy ion collisions in a dynamical quark coalescence model
• Hydrodynamics Near a Chiral Critical Point
• (3+1)-Dimensional Hydrodynamic Expansion with a Critical Point from Realistic Initial Conditions
• Examination of the directed flow puzzle in heavy-ion collisions
• Elliptic flow in heavy ion collisions near the balance energy
• Elliptic flow of $\varphi$ meson and strange quark collectivity at RHIC
• An unusual space-time evolution for heavy ion collisions at high energies due to the QCD phase transition
• Azimuthal anisotropies for Au+Au collisions in the parton-hadron transient energy range
• v4: A small, but sensitive observable for heavy ion collisions
• Partonic effects on higher-order anisotropic flows in relativistic heavy-ion collisions
• Early collective expansion: Relativistic hydrodynamics and the transport properties of QCD matter
• Directed and elliptic flow in heavy ion collisions from $E_{\mathrm{beam}}=90$ MeV/nucleon to $E_{c.m.}=200$ GeV/nucleon
• Scaling of Anisotropic Flow and Momentum-Space Densities for Light Particles in Intermediate Energy Heavy Ion Collisions
• Hydrodynamics with a chiral hadronic equation of state including quark degrees of freedom
• Elliptical flow and isospin effects in heavy-ion collisions at intermediate energies
• Directed flow in Au+Au collisions at $\sqrt{s_{{}_{NN}}}$ =62.4 GeV
• Charged and strange hadron elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV
• Towards a Deeper Understanding of How Experiments Constrain the Underlying Physics of Heavy-Ion Collisions
• Directed Flow Indicates a Crossover Deconfinement Transition in Relativistic Nuclear Collisions
• Nonequilibrium fluid-dynamics in the early stage of ultrarelativistic heavy-ion collisions
• Pseudorapidity dependence of anisotropic flows in relativistic heavy-ion collisions
• Elliptic flow of thermal dileptons in relativistic nuclear collisions
• Local Thermal and Chemical Equilibration and the Equation of State in Relativistic Heavy Ion Collisions
• Anisotropic flow of charged and identified hadrons in the quark-gluon string model for Au+Au collisions at sqrt(s) = 200 GeV
• Elliptic flow of colored glass in high energy heavy ion collisions
• Mean-field update in the JAM microscopic model: Mean-field effects on collective flow in high-energy heavy-ion collisions at $\sqrt{s_{NN}}=2-20$ GeV energies
• Towards the Quark-Gluon Plasma
• Sensitivity of Au+Au collisions to the symmetric nuclear matter equation of state at 2 -- 5 nuclear saturation densities
• Hydrodynamics at large baryon densities: Understanding proton vs. anti-proton v_2 and other puzzles
• The quark-gluon plasma at RHIC
• Event Anisotropy in High Energy Nucleus-Nucleus Collisions
• Energy dependence of elliptic flow from heavy-ion collision models
• Elliptic Flow from a Transversally Thermalized Fireball
• Antiflow of kaons in relativistic heavy ion collisions
• Differential Elliptic Flow in 2 - 6 AGeV Au+Au Collisions: A New Constraint for the Nuclear Equation of State
• Emission angle dependent pion interferometry at RHIC and beyond
• System size dependence of elliptic flows in relativistic heavy-ion collisions
• Collective Flow in Heavy-Ion Collisions from AGS to SPS
• What have we learned and want to learn from heavy ion collisions at CERN SPS?
• Centrality Dependence of Directed and Elliptic Flow at the SPS
• Are we close to the QGP? - Hadrochemical vs. microscopic analysis of particle production in ultrarelativistic heavy ion collisions
• Sensitivity of the excitation functions of collective flow to relativistic scalar and vector meson interactions in the relativistic quantum molecular dynamics model RQMD.RMF
• Probing initial baryon stopping and equation of state with rapidity-dependent directed flow of identified particles
• Uranium on uranium collisions at relativistic energies
• The first moment of azimuthal anisotropy in nuclear collisions from AGS to LHC energies
• Differential Flow of Protons in Au+Au Collisions at AGS Energies
• High energy collisions of strongly deformed nuclei: An old idea with a new twist
• Core-corona separation in the UrQMD hybrid model
• The role of elliptic flow correlations in the discovery of the sQGP at RHIC
• Anisotropic flow at RHIC: How unique is the number-of-constituent-quark scaling?
• Comparison of Source Images for protons, ${\pi }^{-}$'s and $\Lambda$'s in 6 AGeV Au+Au collisions
• Directed and elliptic flow of charged particles in Cu+Cu collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}=$ 22.4 GeV
• Beam energy dependence of squeeze-out effect on the directed and elliptic flow in Au+Au collisions at high baryon density region
• Longitudinal distribution of initial energy density and directed flow of charged particles in relativistic heavy-ion collisions
• In-Plane Elliptic Flow of Resonance Particles in Relativistic Heavy-Ion Collisions
• Breaking of the number-of-constituent-quark scaling for identified-particle elliptic flow as a signal of phase change in low-energy data taken at the BNL Relativistic Heavy Ion Collider (RHIC)
• The directed flow maximum near c_s=0
• Enhancement of elliptic flow can signal a first order phase transition in high energy heavy ion collisions
• What can we learn from the directed flow in heavy-ion collisions at BES RHIC energies?
• Light cluster production at NICA
• Elliptic Flow: A Study of Space-Momentum Correlations In Relativistic Nuclear Collisions
• Transverse momentum dependence of directed particle flow at 160 AGeV
• Hard photon flow and photon-photon correlation in intermediate energy heavy-ion collisions
• Energy dependence study of directed flow in Au+Au collisions using an improved coalescence in AMPT model
• Directed flow of open charm in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV using a quark coalescence model
• Azimuthal asymmetry of direct photons in intermediate energy heavy-ion collisions
• Measurement of long-range two-particle azimuthal correlations in $Z$-boson tagged $pp$ collisions at $\sqrt{s}=8$ and 13 TeV
• Directed flow of transported and non-transported protons in Au+Au collisions from UrQMD model
• Anisotropic flow in Cu+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Hyperon polarization and its relation with directed flow in high-energy nuclear collisions
• Influence of charge asymmetry and isospin dependent cross-section on elliptical flow
• $J/\psi$ suppression in heavy ion collsions and the QCD phase transition
• Scaling of elliptic flow in heavy-ion collisions with the number of constituent quarks in a transport model
• Experimental balance energies and isospin-dependent nucleon-nucleon cross-sections
• Scaling of Anisotropic Flows and Nuclear Equation of State in Intermediate Energy Heavy Ion Collisions
• Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach
• Elliptic flow fluctuations in heavy ion collisions at RHIC and the perfect fluid hypothesis
• The enhancement of $v_4$ in nuclear collisions at the highest densities signals a first order phase transition
• Elliptic flow at RHIC: where and when does it formed?
• Collective Flow of Protons and Negative Pions in Nucleus-Nucleus Collisions at Momentum of $4.2÷4.5$ AGeV/c
• Directed flow and global polarization in Au+Au collisions across energies covered by the beam energy scan at RHIC
• Excitation function of nucleon and pion elliptic flow in relativistic heavy-ion collisions
• Systematic study of symmetric cumulants at $\sqrt{s_{NN}}$ = 200 GeV in Au+Au collision using transport approach
• Azimuthal Anisotropy of Photon and Charged Particle Emission in Pb+Pb Collisions at 158 A GeV/c
• Microscopic description of anisotropic flow in relativistic heavy ion collisions
• Simulation study of elliptic flow of charged hadrons produced in Au + Au collisions at the Facility for Antiproton and Ion Research
• Insight from elliptic flow of open charm mesons using quark coalescence model at RHIC and LHC energies
• Nuclear Matter Expansion Parameters from the Measurement of Differential Multiplicities for Lambda Production in Central Au+Au Collisions at AGS
• Radial flow of kaon mesons in heavy ion reactions
• Energy Dependence of Directed Flow in Au+Au Collisions from a Multi-phase Transport Model
• Anisotropic flows from initial state of a fast nucleus
• Phase diagram determination at fivefold nuclear compression
• Influence of density dependent symmetry energy on Elliptical flow
• Transition to meson-dominated matter at RHIC. Consequences for kaon flow
• Longitudinal scaling of observables in heavy-ion collision models
• Equation of State and Collective Dynamics
• An experimental review on elliptic flow of strange and multi-strange hadrons in relativistic heavy ion collisions
• Azimuthal anisotropy in particle distribution in A Multi-phase Transport Model
• Elliptic flow of transported and non-transported proton in Au+Au collisions within the UrQMD model
• Partonic Effects in Heavy Ion Collisions at RHIC
• Beam Energy Dependence of Directed and Elliptic Flow Measurement from the STAR Experiment
• Effects of mean-field and the softening of equation of state on elliptic flow in Au+Au collision at $\sqrt{s_{NN}}$ = 5 GeV from JAM model
• Hydrodynamic flow at RHIC
• Proton and deuteron distributions as signatures for collective particle dynamics and event shape geometries at the RHIC
• Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers
• Elliptic flow from partially thermalized heavy-ion collisions
• Anisotropic flow of strange particles in heavy ion collisions at RHIC energies
• Using the $\varphi$-meson elliptic flow to map the strength of partonic interaction
• Examination of STAR fixed-target data on directed flow at $\sqrt{s_{NN}}=$ 3 and 4.5 GeV
• Hydrodynamic simulations of directed flow for light hadrons in Au+Au and isobar collisions $\sqrt{s_{\text{NN}}}=$ 200 GeV
• Hydrodynamic emission of strange and non-strange particles at RHIC and LHC
• Azimuthal distributions of radial momentum and velocity in relativistic heavy ion collisions
• Systematic study of the elliptic flow parameter using a heavy-ion collision model
• Directed flow in heavy-ion collisions and its implications for astrophysics
• Nuclear profile dependence of elliptic flow from a parton cascade
• Probing the profile of bulk matter in p+Pb collisions via directed flow of heavy quarks
• Is the existence of a softest point in the directed flow excitation function an unambiguous signal for the creation of a quark-gluon plasma?
• Measurement of anisotropic radial flow in relativistic heavy ion collisions
• Probing $\Lambda$ potential via its $v_2$ flow in hypernuclei-induced reaction
• Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca + Ca by Quantum Molecular Dynamics Model
• Directed Flow of Identified Particles in Au + Au Collisions at $\sqrtsNN = 200$ GeV
• Violation of NCQ scaling in hadron elliptic flow in Au+Au collisions at $\sqrt{s_{NN}}=3.0-7.7GeV
• Dependence of elliptic flow on transverse momentum in 200 GeV Au-Au and 2.76 TeV Pb-Pb collisions
• Azimuthal flow in hadron collisions from quark-gluon string repulsion
• ${\Omega }^{-}$ production as a probe of equation of state of dense matter near the QCD phase transition in relativistic heavy-ion collisions
• Radial flow in a multi phase transport model at FAIR energies
• Current Status of Quark Gluon Plasma Signals
• Directed Flow of Charged Kaons in Au+Au Collisions from the BES Program at RHIC
• Directed flow of $\Lambda$, $\bar{\Lambda }$, $K^{\pm }$, $K_S^0$ and $\varphi$ mesons from Beam Energy Scan Au+Au collisions using the STAR experiment
• Elliptic Flow from Color Glass Condensate
• Directed flow of antiprotons in Au+Au collisions at AGS
• Energy loss of heavy-flavor quarks in color string medium
• On the elliptical flow in asymmetric collisions and nuclear equation of state
• System size dependence of charged hadrons directed flow at $\sqrt{s_{NN}}$ = 200 GeV using a multi-phase transport model
• Electric-charge-dependent directed flow splitting of produced quarks in Au+Au collisions
• Energy dependence of inclusive photon elliptic flow in heavy-ion collision models
• Statistical hadronization phenomenology in heavy ion collisions at SPS and RHIC energies