Light-nuclei production in heavy-ion collisions within a thermodynamical approach

Abstract

We present results of simulations of light-nuclei production in relativistic heavy-ion collisions within updated Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD (Ultra-relativistic Quantum Molecular Dynamics) final State interactions (THESEUS). The simulations were performed for Pb+Pb and Au+Au collisions in the collision energy range of $\sqrt{s_{NN}}=$ 6.4--19.6 GeV. The light-nuclei production is treated within the thermodynamical approach on equal basis with hadrons. The only additional parameter related to the light nuclei is the energy density of late freeze-out that imitates afterburner stage of the collision because the light nuclei do not participate in the UrQMD evolution. This parameter is fixed from the condition of the best reproduction of the proton transverse-momentum spectrum after the UrQMD afterburner by that at the late freeze-out. The updated THESEUS results in not perfect, but a reasonable reproduction of data on bulk observables of the light nuclei, especially their functional dependence on the collision energy and light-nucleus mass. Various ratios, $d/p$, $t/p$, $t/d$, and $N(t)\times N(p)/N^2(d)$, are also considered. The directed flow of light nuclei turns out to be more involved. Apparently, it requires explicit treatment of the afterburner evolution of light nuclei that violates the kinetic equilibrium. Imperfect reproduction of the light-nuclei data leaves room for medium effects in produced light nuclei.

arXiv comment12 pages, 11 figures. Version published in PRC, discussion extended

References in corpus (62)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Decoding the phase structure of QCD via particle production at high energy
• Non-Gaussian fluctuations near the QCD critical point
• Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
• Production of light nuclei, hypernuclei and their antiparticles in relativistic nuclear collisions
• Particle production and equilibrium properties within a new hadron transport approach for heavy-ion collisions
• Beam-Energy Dependence of Directed Flow of Protons, Antiprotons and Pions in Au+Au Collisions
• Non-monotonic energy dependence of net-proton number fluctuations
• Viscous QCD matter in a hybrid hydrodynamic+Boltzmann approach
• Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production vs. Coalescence
• Relativistic Heavy-Ion Collisions within 3-Fluid Hydrodynamics: Hadronic Scenario
• Report from NA49
• Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) -- A Novel Microscopic N-Body Transport Approach for Heavy-Ion Collisions, Dynamical Cluster Formation and Hypernuclei Production
• Spinodal amplification of density fluctuations in fluid-dynamical simulations of relativistic nuclear collisions
• Deuterons at LHC: "snowballs in hell" via hydrodynamics and hadronic afterburner
• Light nuclei production as a probe of the QCD phase diagram
• Probing QCD critical fluctuations from light nuclei production in relativistic heavy-ion collisions
• Deuteron production from phase-space coalescence in the UrQMD approach
• Beam energy dependence of (anti-)deuteron production in Au+Au collisions at RHIC
• Phase transition dynamics for baryon-dense matter
• Production of deuterium, tritium, and ${}^3$He in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN SPS
• Centrality dependence of proton and antiproton spectra in Pb+Pb collisions at 40A GeV and 158A GeV measured at the CERN SPS
• Light (anti-)nuclei production and flow in relativistic heavy-ion collisions
• Lattice QCD Constraints on the Nuclear Equation of State
• Directed Flow Indicates a Crossover Deconfinement Transition in Relativistic Nuclear Collisions
• Alternative Scenarios of Relativistic Heavy-Ion Collisions: I. Baryon Stopping
• A machine learning study to identify spinodal clumping in high energy 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
• "Smashing more than two": Deuteron production in relativistic heavy ion collisions via stochastic multi-particle reactions
• Cluster and hyper-cluster production in relativistic heavy-ion collisions within the Parton-Hadron-Quantum-Molecular-Dynamics approach
• Baryon preclustering at the freeze-out of heavy-ion collisions and light-nuclei production
• Dynamical Freeze-out in 3-Fluid Hydrodynamics
• Hydrodynamical description of first-order phase transitions: Analytical treatment and numerical modeling
• Light Nuclei Production in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5-200 GeV from JAM model
• Light Nuclei ($d$, $t$) Production in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 - 200 GeV
• Multiplicity Scaling of Light Nuclei Production in Relativistic Heavy-Ion Collisions
• Alternative Scenarios of Relativistic Heavy-Ion Collisions: II. Particle Production
• Baryon Stopping as a Probe of Deconfinement Onset in Relativistic Heavy-Ion Collisions
• Beam Energy dependence of Light Nuclei Production in Au+Au Collisions
• Alternative Scenarios of Relativistic Heavy-Ion Collisions: III. Transverse Momentum Spectra
• High Transverse Momentum Hadron Spectra at sqrt{s_{NN}}=17.3 GeV, in Pb+Pb and p+p Collisions
• Production of light nuclei at colliders -- coalescence vs. thermal model
• Coalescence, the thermal model and multi-fragmentation: The energy and volume dependence of light nuclei production in heavy ion collisions
• On freeze-out problem in relativistic hydrodynamics
• Feeddown contributions from unstable nuclei in relativistic heavy-ion collisions
• Overview of light nuclei production in relativistic heavy-ion collisions
• Energy dependence of light (anti)nuclei and (anti)hypertriton production in the Au-Au collision from $\sqrt{s_{\mathrm{NN}}}=5.0$ to $5020$ GeV
• Hydrodynamical description of a hadron-quark first-order phase transition
• Light-nuclei production and search for the QCD critical point
• Light cluster production at NICA
• What can we learn from the directed flow in heavy-ion collisions at BES RHIC energies?
• Beam-Energy Dependence of the Directed Flow of Deuterons in Au+Au Collisions
• Effects of QCD critical point on light nuclei production
• Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS) for FAIR-NICA-SPS-BES/RHIC energies
• Bulk Properties of the Matter Produced at Energies of the Beam Energy Scan Program
• Deuteron yields from LHC: Continuum correlations and in-medium effects
• Update of the Three-fluid Hydrodynamics-based Event Simulator: light-nuclei production in heavy-ion collisions
• Medium effects on freeze-out of light clusters at NICA energies
• Energy Dependence of Light Nuclei ($d$, $t$) Production at STAR
• Light fragment production at CERN Super Proton Synchrotron
• Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan