Transverse-momentum fluctuations in relativistic heavy-ion collisions from event-by-event viscous hydrodynamics

Abstract

We analyze event-by-event fluctuations of the transverse momentum in relativistic heavy-ion collisions at RHIC in the framework based on the fluctuating Glauber-model initial conditions, event-by-event (3+1)-dimensional viscous hydrodynamics, and statistical hadronization. We use the scaled fluctuation measure < Delta p_Ti Delta p_Tj > / << p_T >>. The identified "geometric" mechanism of generating the transverse-momentum fluctuations from the initial size fluctuations, transmitted to the final statistical-hadronization phase with hydrodynamics, is capable of easily reproducing the magnitude of the effect and explains the basic features of the data. On the other hand, it is somewhat too strong, hinting on modification of the popular Glauber approach to the earliest phase of the collision. We have checked that the considered measure is insensitive of the values of the shear and bulk viscosity coefficients, the freeze-out temperature, and the smoothing parameter for the initial distribution. It remains unaltered in the core-corona picture and is insensitive to the transverse-momentum conservation, approximately imposed in the statistical hadronization.

arXiv comment11 pages, 8 figures

References in corpus (75)

• The QCD equation of state with dynamical quarks
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Hadron production in nuclear collisions at RHIC and high density QCD
• The Effect of Shear Viscosity on Spectra, Elliptic Flow, and HBT Radii
• New Developments in Relativistic Viscous Hydrodynamics
• Triangularity and Dipole Asymmetry in Heavy Ion Collisions
• Triangular flow in hydrodynamics and transport theory
• System Size, Energy, Pseudorapidity, and Centrality Dependence of Elliptic Flow
• Hydrodynamic Models for Heavy Ion Collisions
• Mapping the hydrodynamic response to the initial geometry in heavy-ion collisions
• Collective flow in p-Pb and d-Pb collisions at TeV energies
• Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions
• Triangular flow in event-by-event ideal hydrodynamics in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200A$ GeV
• Bulk and shear viscosities of matter created in relativistic heavy-ion collisions
• Effects of fluctuations on the initial eccentricity from the Color Glass Condensate in heavy ion collisions
• Elliptic flow and incomplete equilibration at RHIC
• GLISSANDO: GLauber Initial-State Simulation AND mOre
• Elliptic flow in the Gaussian model of eccentricity fluctuations
• Flow and interferometry in 3+1 dimensional viscous hydrodynamics
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• SHARE: Statistical Hadronization with Resonances
• THERMINATOR 2: THERMal heavy IoN generATOR 2
• Therminator: Thermal heavy-Ion generator
• Measuring Shear Viscosity Using Transverse Momentum Correlations in Relativistic Nuclear Collisions
• Directed flow in ultrarelativistic heavy-ion collisions
• On the necessity to include event-by-event fluctuations in experimental evaluation of elliptical flow
• Bulk viscosity in quasi particle models
• Event-by-event analysis of heavy ion collisions and thermodynamical fluctuations
• Event-by-event fluctuations of the mean transverse momentum in 40, 80, and 158 A GeV/c Pb-Au collisions
• Event-by-event fluctuations in collective quantities
• Fluctuating initial conditions in heavy-ion collisions from the Glauber approach
• Torqued fireballs in relativistic heavy-ion collisions
• Incident energy dependence of pt correlations at relativistic energies
• Collision geometry scaling of Au+Au pseudorapidity density from sqrt(s_NN) = 19.6 to 200 GeV
• Measurement of Non-Random Event-by-Event Fluctuations of Average Transverse Momentum in sqrt(s_NN)=200 GeV Au+Au and p+p Collisions
• Transverse Momentum Fluctuations in Nuclear Collisions at 158 AGeV
• Importance of Granular Structure in the Initial Conditions for the Elliptic Flow
• System size, energy and pseudorapidity dependence of directed and elliptic flow at RHIC
• Smoothed Particle Hydrodynamics for Relativistic Heavy Ion Collisions
• Evolution of the differential transverse momentum correlation function with centrality in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Event-by-Event Fluctuations in Ultrarelativistic Heavy-Ion Collisions
• Centrality Dependence of Charged Particle Multiplicity at Mid-Rapidity in Au+Au Collisions at sqrt(s_NN) = 130 GeV
• Event-wise mean p_t fluctuations in Au-Au collisions at sqrt{s_{NN}} = 130 GeV
• Geometric relation between centrality and the impact parameter in relativistic heavy-ion collisions
• A Monte Carlo generator of nucleon configurations in complex nuclei including Nucleon-Nucleon correlations
• Hadronic matter compressibility from event-by-event analysis of heavy-ion collisions
• Directed flow at mid-rapidity in event-by-event hydrodynamics
• Fluctuations around Bjorken Flow and the onset of turbulent phenomena
• Traces of Thermalization from Transverse Momentum Fluctuations in Nuclear Collisions
• Components of the elliptic flow in Pb-Pb collisions at 2.76 TeV
• Centrality dependence of strangeness production in heavy-ion collisions as a geometrical effect of core-corona superposition
• Two particle rapidity, transverse momentum, and azimuthal correlations in relativistic nuclear collisions and transverse radial expansion
• Wounded quarks and diquarks in heavy ion collisions
• Size fluctuations of the initial source and the event-by-event transverse momentum fluctuations in relativistic heavy-ion collisions
• Transverse momentum fluctuations due to temperature variation in high-energy nuclear collisions
• Universality of the transverse momentum distributions in the framework of percolation of strings
• The energy dependence of $p_t$ angular correlations inferred from mean-$p_t$ fluctuation scale dependence in heavy ion collisions at the SPS and RHIC
• Two-body nucleon-nucleon correlations in Glauber models of relativistic heavy-ion collisions
• NeXSPheRIO Results on Elliptic-Flow Fluctuations at RHIC
• Methods for the Study of Transverse Momentum Differential Correlations
• Wounded nucleon model with realistic nucleon-nucleon collision profile and observables in relativistic heavy-ion collisions
• Scale-dependence of transverse momentum correlations in Pb-Au collisions at 158A GeV/c
• On Transverse Momentum Event--by--Event Fluctuations in String Hadronic Models
• System-size dependence of strangeness production in high-energy A+A collisions and percolation of strings
• Event-by-event pT fluctuations and multiparticle clusters in relativistic heavy-ion collisions
• Transverse momentum versus multiplicity fluctuations in high-energy nuclear collisions
• On the Role of Initial Conditions and Final State Interactions in Ultrarelativistic Heavy Ion Collisions
• Beam Fragmentation in Heavy Ion Collisions with Realistically Correlated Nuclear Configurations
• Two-particle correlations on transverse momentum and momentum dissipation in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV
• Interplay of the emission from thermal and direct sources in relativistic heavy ion collisions
• Interferometry radii in heavy-ion collisions at 200GeV and 2.76TeV
• Multiplicity and mean transverse momentum fluctuations in Au + Au collisions at RHIC
• Probing Quark Gluon Liquid Using Transverse Momentum Fluctuations

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• Triangular flow of thermal photons from an event-by-event hydrodynamic model for 2.76A TeV Pb+Pb collisions at LHC
• Model investigations of the correlation between the mean transverse momentum and anisotropic flow in shape-engineered events
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• Resonance Decay Contributions to Higher-Order Anisotropic Flow Coefficients
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• A benchmark of initial state models for heavy-ion collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 27 and 62 GeV
• The universal scaling of kinetic freeze-out parameters across different collision systems at the LHC energy
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• Charge balancing and the fall off of the ridge
• Imprints of octupole collectivity in uranium-238 on relativistic heavy-ion flow observables
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• Extracting the speed of sound of QCD from transverse momentum fluctuations
• Effect of charged particle's multiplicity fluctuations on flow harmonics in even-by-event hydrodynamics
• $p_T$-dependent multiplicity fluctuations from PCA and initial conditions
• Beam-energy dependence of correlations between mean transverse momentum and anisotropic flow of charged particles in Au+Au collisions at RHIC