Elliptic Flow in Heavy-Ion Collisions at Energies $\sqrt{s_{NN}}=$ 2.7--39 GeV

Abstract

The transverse-momentum integrated elliptic flow of charged particles at midrapidity, $v_2$(charged), and that of identified hadrons from Au+Au collisions are computed in a wide range of incident energies 2.7 GeV $\le \sqrt{s_{NN}}\le$ 39 GeV. The simulations are performed within a three-fluid model employing three different equations of state (EoS's): a purely hadronic EoS and two versions of the EoS involving the deconfinement transition---a first-order phase transition and a smooth crossover one. The present simulations demonstrate low sensitivity of $v_2$(charged) to the EoS. All considered scenarios equally well reproduce recent STAR data on $v_2$(charged) for mid-central Au+Au collisions and properly describe its change of sign at the incident energy decrease below $\sqrt{s_{NN}}\approx$ 3.5 GeV. The predicted integrated elliptic flow of various species exhibits a stronger dependence on the EoS. A noticeable sensitivity to the EoS is found for anti-baryons and, to a lesser extent, for $K^{-}$ mesons. In particular, the $v_2$ excitation functions of anti-baryons exhibit a non-monotonicity within the deconfinement scenarios that was predicted by Kolb, Sollfrank and Heinz. However, low multiplicities of anti-baryons at $\sqrt{s_{NN}}\le$ 10 GeV result in large fluctuations of their $v_2$ which may wash out this non-monotonicity.

10 pages, 5 figures. Version published in Phys. Rev. C

References in corpus (21)

• Glauber Modeling in High Energy Nuclear Collisions
• Parton transport and hadronization from the dynamical quasiparticle point of view
• Systematics of pion emission in heavy ion collisions in the 1A GeV regime
• Effects of fluctuations on the initial eccentricity from the Color Glass Condensate in heavy ion collisions
• Inclusive charged hadron elliptic flow in Au + Au collisions at $\sqrt{s_{NN}}$ = 7.7 - 39 GeV
• The eccentricity in heavy-ion collisions from Color Glass Condensate initial conditions
• Eccentricity fluctuations from the Color Glass Condensate at RHIC and LHC
• Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions
• QCD thermodynamics and confinement from a dynamical quasiparticle point of view
• Dynamical phase trajectories for relativistic nuclear collisions
• Collision Energy Dependence of Viscous Hydrodynamic Flow in Relativistic Heavy-Ion Collisions
• Viscosity coefficients for hadron and quark-gluon phases
• Lattice QCD Constraints on the Nuclear Equation of State
• Dynamical Freeze-out in 3-Fluid Hydrodynamics
• Hydrodynamic radial and elliptic flow in heavy-ion collisions from AGS to LHC energies
• Eccentricity fluctuations in an integrated hybrid approach: Influence on elliptic flow
• Collective Flow in Heavy-Ion Collisions from AGS to SPS
• Alternative Scenarios of Relativistic Heavy-Ion Collisions: III. Transverse Momentum Spectra
• On freeze-out problem in relativistic hydrodynamics
• Collective Flow Global Collective Flow in Heavy Ion Reactions from the Beginnings to the Future
• Time dependence of partition into spectators and participants in relativistic heavy-ion collisions

Cited by in corpus (25)

• Centrality dependence of identified particle elliptic flow in relativistic heavy ion collisions at sqrt(s)= 7.7--62.4 GeV
• Directed Flow Indicates a Crossover Deconfinement Transition in Relativistic Nuclear Collisions
• Estimates of hyperon polarization in heavy-ion collisions at collision energies $\sqrt{s_{NN}}=$ 4--40 GeV
• Event simulation based on three-fluid hydrodynamics for collisions at energies available at the Dubna Nuclotron-based Ion Collider Facility and at the Facility for Antiproton and Ion Research in Darmstadt
• Vorticity in heavy-ion collisions at the JINR Nuclotron-based Ion Collider fAcility
• Correlation between global polarization, angular momentum and flow in heavy-ion collisions
• Vortex rings in fragmentation regions in heavy-ion collisions at $\sqrt{s_{NN}}=$ 39 GeV
• 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?
• Entropy Production and Effective Viscosity in Heavy-Ion Collisions
• Particle production and chemical freezeout from the hybrid UrQMD approach at NICA energies
• Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS) for FAIR-NICA-SPS-BES/RHIC energies
• Bulk Properties of the Matter Produced at Energies of the Beam Energy Scan Program
• Entropy production in chemically non-equilibrium quark-gluon plasma created in central Pb+Pb collisions at LHC energies
• Global $\Lambda$ polarization in heavy-ion collisions at energies 2.4--7.7 GeV: Effect of Meson-Field Interaction
• High baryon and energy densities achievable in heavy-ion collisions at $\sqrt{s_{NN}}=$ 39 GeV
• Estimates of the baryon densities attainable in heavy-ion collisions from the beam energy scan program
• 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
• An explanation of the elliptic flow difference between proton and anti-proton from the UrQMD model with hadron potentials
• Examination of STAR fixed-target data on directed flow at $\sqrt{s_{NN}}=$ 3 and 4.5 GeV
• Directed flow in heavy-ion collisions and its implications for astrophysics
• Vortex rings in heavy-ion collisions at energies $\sqrt{s_{NN}}=$ 3--30 GeV and possibility of their observation
• Probing Nuclear Geometry through Multi-Particle Azimuthal Correlations and Rapidity-Even Dipolar Flow in ${}^{16}$O+${}^{16}$O Collisions
• Study of collective flows of protons and ${\pi }^{-}$ -mesons in p(C, Ta) and He(Li, C) collisions at momenta of 4.2, 4.5 and 10 AGeV/c
• Flow harmonic correlations via multi-particle symmetric and asymmetric cumulants in Au+Au collisions at \(\sqrt{s_{NN}}\) = 200 GeV