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.

4 pages, 5 figures

References in corpus (4)

• Space-time evolution of bulk QCD matter
• On the necessity to include event-by-event fluctuations in experimental evaluation of elliptical flow
• Elliptic flow fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• NeXSPheRIO Results on Elliptic-Flow Fluctuations at RHIC

Cited by in corpus (32)

• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• Systematic parameter study of hadron spectra and elliptic flow from viscous hydrodynamic simulations of Au+Au collisions at sqrt(s_NN) = 200 GeV
• 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
• Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions
• Transverse-momentum fluctuations in relativistic heavy-ion collisions from event-by-event viscous hydrodynamics
• Viscous Effects on the Mapping of the Initial to Final State in Heavy Ion Collisions
• Directed flow at mid-rapidity in event-by-event hydrodynamics
• 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
• Enhancement of thermal photon production in event-by-event hydrodynamics
• Rapid hydrodynamic expansion in relativistic heavy-ion collisions
• Eccentricity fluctuations in an integrated hybrid approach: Influence on elliptic flow
• Hydrodynamic Predictions for Mixed Harmonic Correlations in 200 GeV Au+Au Collisions
• Kaon and pion femtoscopy at the highest energies available at the BNL Relativistic Heavy Ion Collider (RHIC) in a hydrokinetic model
• Anisotropic flow in transport+hydrodynamics hybrid approaches
• $<m_T>$ excitation function: Freeze-out and equation of state dependence
• 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
• Extensivity of Irreversible Current and Stability in Causal Dissipative Hydrodynamics
• Hydrodynamics: Fluctuating Initial Conditions and Two-particle Correlations
• Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions
• Imaging of granular sources in high energy heavy ion collisions
• Detection of source inhomogeneity through event-by-event two-pion Bose-Einstein correlations
• Anisotropic Flow and Jet Quenching in Relativistic Nuclear Collisions
• 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
• 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