Core-corona separation in the UrQMD hybrid model

Abstract

We employ the UrQMD transport + hydrodynamics hybrid model to estimate the effects of a separation of the hot equilibrated core and the dilute corona created in high energy heavy ion collisions. It is shown that the fraction of the system which can be regarded as an equilibrated fireball changes over a wide range of energies. This has an impact especially on strange particle abundancies. We show that such a core corona separation allows to improve the description of strange particle ratios and flow as a function of beam energy as well as strange particle yields as a function of centrality.

10 pages, 11 figures, version accepted by PRC

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• Dynamically integrated transport approach for heavy-ion collisions at high baryon density
• Femto-cyclones and hyperon polarization in Heavy-Ion Collisions
• Equation of state dependence of directed flow in a microscopic transport model
• Hadronization and Hadronic Freeze-Out in Relativistic Nuclear Collisions
• 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
• Hydrodynamics at large baryon densities: Understanding proton vs. anti-proton v_2 and other puzzles
• Anisotropic flow in transport+hydrodynamics hybrid approaches
• UrQMD calculations of two-pion HBT correlations in central Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Energy dependence of light hypernuclei production in heavy-ion collisions from a coalescence and statistical-thermal model perspective
• Enhancement of strange baryons in high-multiplicity proton-proton and proton-nucleus collisions
• Forced canonical thermalization in a hadronic transport approach at high density
• Core-corona interplay in Pb-Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV
• UrQMD calculations of two-pion HBT correlations in p+p and Pb+Pb collisions at LHC energies
• Optimal collision-energy range for realizing macroscopic high-baryon-density matter
• Considerations on the suppression of charged particles and ${\pi }^0$ in high energy heavy ion collisions
• Multi-strange and charmed hadrons: A novel probe for the QCD equation of state at high baryon densities
• Exploring Strangeness Enhancement and Particle Production in Small Collision Systems with EPOS4 at $\sqrt{s_\rm{NN}}$ = 5.02 TeV
• Particle spectra in the integrated hydrokinetic model at RHIC Beam-Energy-Scan energies
• Event-by-Event Observables and Fluctuations