Importance of Granular Structure in the Initial Conditions for the Elliptic Flow

Abstract

We show effects of granular structure of the initial conditions (IC) of hydrodynamic description of high-energy nucleus-nucleus collisions on some observables, especially on the elliptic-flow parameter v2. Such a structure enhances production of isotropically distributed high-pT particles, making v2 smaller there. Also, it reduces v2 in the forward and backward regions where the global matter density is smaller, so where such effects become more efficacious.

arXiv comment4 pages, 5 figures

References in corpus (19)

• Lattice determination of the critical point of QCD at finite T and μ
• Hadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions
• Lattice Results on QCD Thermodynamics
• Space-time evolution of bulk QCD matter
• Is early thermalization achieved only near midrapidity at RHIC ?
• Centrality and pseudorapidity dependence of elliptic flow for charged hadrons in Au+Au collisions at sqrt(sNN) = 200 GeV
• Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV
• On the necessity to include event-by-event fluctuations in experimental evaluation of elliptical flow
• Topics on Hydrodynamic Model of Nucleus-Nucleus Collisions
• Fluctuations of the Initial Conditions and the Continuous Emission in Hydrodynamic Description of Two-Pion Interferometry
• Event-by-event fluctuations in hydrodynamical description of heavy-ion collisions
• Smoothed Particle Hydrodynamics for Relativistic Heavy Ion Collisions
• Hot Spots and Turbulent Initial Conditions of Quark-Gluon Plasmas in Nuclear Collisions
• Initial Condition for QGP Evolution from NEXUS
• 3D Relativistic Hydrodynamic Computations Using Lattice-QCD-Inspired Equations of State
• Elliptic flow fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• NeXSPheRIO Results on Elliptic-Flow Fluctuations at RHIC
• Elliptic flow fluctuations in 200 GeV Au+Au collisions at RHIC
• Equation of state from lattice QCD

Cited by in corpus (79)

• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Hydrodynamic Modeling of Heavy-Ion Collisions
• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• Event-by-event shape and flow fluctuations of relativistic heavy-ion collision fireballs
• Event-by-Event Simulation of the Three-Dimensional Hydrodynamic Evolution from Flux Tube Initial Conditions in Ultrarelativistic Heavy Ion Collisions
• Mapping the hydrodynamic response to the initial geometry in heavy-ion collisions
• Higher flow harmonics from (3+1)D event-by-event viscous hydrodynamics
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• Bulk Viscosity Effects in Event-by-Event Relativistic Hydrodynamics
• Initial State Fluctuations and Final State Correlations in Relativistic Heavy-Ion Collisions
• Systematic parameter study of hadron spectra and elliptic flow from viscous hydrodynamic simulations of Au+Au collisions at sqrt(s_NN) = 200 GeV
• Elliptic flow in 200 A GeV Au+Au collisions and 2.76 A TeV Pb+Pb collisions: insights from viscous hydrodynamics + hadron cascade hybrid model
• Hadron spectra and elliptic flow for 200 A GeV Au+Au collisions from viscous hydrodynamics coupled to a Boltzmann cascade
• Breaking of factorization of two-particle correlations in hydrodynamics
• Integrated Dynamical Approach to Relativistic Heavy Ion Collisions
• Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions
• Anisotropic flow in event-by-event ideal hydrodynamic simulations of sqrt(s_{NN})=200 GeV Au+Au collisions
• Transverse-momentum fluctuations in relativistic heavy-ion collisions from event-by-event viscous hydrodynamics
• Moving forward to constrain the shear viscosity of QCD matter
• Viscous Effects on the Mapping of the Initial to Final State in Heavy Ion Collisions
• Heavy quark transport in heavy ion collisions at RHIC and LHC within the UrQMD transport model
• Elliptic flow of thermal photons from event-by-event hydrodynamic model
• Evidence for Hydrodynamic Evolution in Proton-Proton Scattering at LHC Energies
• (3+1)-D viscous hydrodynamics CLVisc at finite net baryon density: identified particle spectra, anisotropic flows and flow fluctuations across BES energies
• Constraining models of initial conditions with elliptic and triangular flow data
• Directed flow at mid-rapidity in event-by-event hydrodynamics
• Sensitivity of flow harmonics to sub-nucleon scale fluctuations in heavy ion collisions
• Systematics of the charged-hadron P_T spectrum and the nuclear suppression factor in heavy-ion collisions from sqrt{s}=200 GeV to sqrt{s} =2.76 TeV
• The QCD phase diagram and Beam Energy Scan physics: a theory overview
• Constraining the initial state granularity with bulk observables in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV
• The QGP shear viscosity -- elusive goal or just around the corner?
• Enhancement of thermal photon production in event-by-event hydrodynamics
• Rapid hydrodynamic expansion in relativistic heavy-ion collisions
• Ideal hydrodynamics and elliptic flow at SPS energies: Importance of the initial conditions
• Eccentricity fluctuations in an integrated hybrid approach: Influence on elliptic flow
• Collision centrality and ${\tau }_0$ dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
• Hydrodynamic Predictions for Mixed Harmonic Correlations in 200 GeV Au+Au Collisions
• Initial state anisotropies and their uncertainties in ultrarelativistic heavy-ion collisions from the Monte Carlo Glauber model
• Anisotropic flow in transport+hydrodynamics hybrid approaches
• Kaon and pion femtoscopy at the highest energies available at the BNL Relativistic Heavy Ion Collider (RHIC) in a hydrokinetic model
• Elliptic flow of thermal photons in heavy-ion collisions at Relativistic Heavy Ion Collider and Large Hadron Collider
• Study of the sensitivity of observables to hot spot size in heavy ion collisions
• Temporal evolution of tubular initial conditions and their influence on two-particle correlations in relativistic nuclear collisions
• $<m_T>$ excitation function: Freeze-out and equation of state dependence
• Decomposition of fluctuating initial conditions and flow harmonics
• QLBT: A linear Boltzmann transport model for heavy quarks in a quark-gluon plasma of quasi-particles
• Longitudinal distribution of initial energy density and directed flow of charged particles in relativistic heavy-ion collisions
• $p_T$-Dependent Particle Number Fluctuations From Principal Component Analyses in Hydrodynamic Simulations of Heavy-Ion Collisions
• On the origin of trigger-angle dependence of di-hadron correlations
• Extensivity of Irreversible Current and Stability in Causal Dissipative Hydrodynamics
• Hydrodynamics: Fluctuating Initial Conditions and Two-particle Correlations
• Effects of initial state fluctuations on the mean transverse momentum
• Effects of initial state fluctuations in the final state elliptic flow measurements using the NeXSPheRIO model
• Phenomenology of the little bang
• Anisotropic flow of thermal photons at RHIC and LHC
• Flow in heavy-ion collisions - Theory Perspective
• Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions
• Coarse graining scale and effectiveness of hydrodynamic modeling
• Triangular flow of thermal photons from an event-by-event hydrodynamic model for 2.76A TeV Pb+Pb collisions at LHC
• Elliptic Flow Suppression due to Hadron Mass Spectrum
• Dissipative hydrodynamics coupled to chiral fields
• Turbulent fluctuations around Bjorken flow
• Hydrodynamic approach to the centrality dependence of di-hadron correlations
• Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited
• Imaging of granular sources in high energy heavy ion collisions
• Detection of source inhomogeneity through event-by-event two-pion Bose-Einstein correlations
• Nonlinear waves in second order conformal hydrodynamics
• Anisotropic Flow and Jet Quenching in Relativistic Nuclear Collisions
• Thermal nature of charmonium transverse momentum spectra from Au-Au collisions at the highest energies available at the BNL Relativistic Heavy Ion Collider (RHIC)
• Hydrodynamic results on multiplicity fluctuations in heavy-ion collisions
• Hydrodynamic simulations of directed flow for light hadrons in Au+Au and isobar collisions $\sqrt{s_{\text{NN}}}=$ 200 GeV
• Influence of tubular initial conditions on two-particle correlations
• A Study of the Di-Hadron Angular Correlation Function in Event by Event Ideal Hydrodynamics
• Stimulation of static deconfined medium by multiple hard partons
• Correlation between particle spectra and elliptic flow
• Flow fluctuations and kinetic freeze-out of identified hadrons at energies available at the CERN Super Proton Synchrotron
• Production of thermal photons in viscous fluid dynamics with temperature-dependent shear viscosity
• Transport properties of a charged hot spot in an external electromagnetic field
• NeXSPheRIO results on azimuthal anisotropy in Au-Au collisions at 200A GeV