Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA-FAIR energy domain

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.014907· OSTI ID:21596604

Merdeev, A V; Satarov, L M; Mishustin, I N ^[1]

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1. National Research Center Kurchatov Institute, 123182 Moscow (Russian Federation)

We use (3 + 1) dimensional ideal hydrodynamics to describe the space-time evolution of strongly interacting matter created in Au + Au and Pb + Pb collisions. The model is applied for the domain of bombarding energies 1-160 GeV/nucleon which includes future NICA (Dubna) and FAIR (Darmstadt) experiments. Two equations of state are used, the first one corresponding to resonance hadron gas and the second one including the deconfinement phase transition. The initial state is represented by two Lorentz-boosted nuclei. Dynamic trajectories of matter in the central box of the system are analyzed. They can be well represented by a fast shock-wave compression followed by a relatively slow isentropic expansion. The parameters of collective flows and hadronic spectra are calculated under assumption of the isochronous freeze-out. It is shown that the deconfinement phase transition leads to broadening of proton rapidity distributions, increase of elliptic flows, and formation of the directed antiflow in the central rapidity region. These effects are most pronounced at bombarding energies around 10 GeV/nucleon, when the system spends the longest time in the mixed phase. From the comparison with three-fluid calculations we conclude that the transparency effects are not so important in central collisions at NICA-FAIR energies (below 30 GeV/nucleon).

• OSTI ID: 21596604
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevC.84.014907; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
COLLISIONS
DISTRIBUTION
EQUATIONS OF STATE
EXPANSION
FOUR-DIMENSIONAL CALCULATIONS
GEV RANGE
GOLD
HEAVY ION REACTIONS
HYDRODYNAMICS
ISENTROPIC PROCESSES
LEAD
NUCLEI
PROTONS
RESONANCE
SHOCK WAVES
SIMULATION
SPACE-TIME
ATOM COLLISIONS
BARYONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EQUATIONS
FERMIONS
FLUID MECHANICS
HADRONS
MECHANICS
METALS
NUCLEAR REACTIONS
NUCLEONS
TRANSITION ELEMENTS