3+1 dimensional viscous hydrodynamics at high baryon densities

Abstract

We apply a 3+1D viscous hydrodynamic + cascade model to the heavy ion collision reactions with $\sqrt{s_{NN}}=6.3\dots 39$ GeV. To accommodate the model for a given collision energy range, the initial conditions for hydrodynamic phase are taken from UrQMD, and the equation of state at finite baryon density is based on Chiral model coupled to the Polyakov loop. We study the collision energy dependence of pion and kaon rapidity distributions and $m_T$-spectra, as well as charged hadron elliptic flow and how shear viscosity affects them. The model calculations are compared to the data for Pb-Pb collisions at CERN SPS, as well as for Au-Au collisions in the Beam Energy Scan (BES) program energies at BNL RHIC. The data favours the value of shear viscosity $\eta /s\gtrsim 0.2$ for this collision energy range.

5 pages, 4 figures. Talk given at FAIRNESS 2013 workshop, September 15-21 2013, Berlin, Germany. arXiv admin note: substantial text overlap with arXiv:1310.0702

References in corpus (6)

• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• Particlization in hybrid models
• Inclusive charged hadron elliptic flow in Au + Au collisions at $\sqrt{s_{NN}}$ = 7.7 - 39 GeV
• An effective chiral Hadron-Quark Equation of State
• Derivation of fluid dynamics from kinetic theory with the 14--moment approximation
• Uniform description of bulk observables in the hydrokinetic model of A+A collisions at RHIC and LHC

Cited by in corpus (9)

• Estimation of the shear viscosity at finite net-baryon density from A+A collision data at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV
• Particle Production via Strings and Baryon Stopping within a Hadronic Transport Approach
• 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
• Quartic cumulant of baryon number in the presence of QCD critical point
• Anisotropic flow in transport+hydrodynamics hybrid approaches
• Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS) for FAIR-NICA-SPS-BES/RHIC energies
• Simulation study of elliptic flow of charged hadrons produced in Au + Au collisions at the Facility for Antiproton and Ion Research
• Collective flow and hydrodynamics in large and small systems at the LHC
• What the collective flow excitation function can tell about the quark-gluon plasma