Longitudinal fluid dynamics for ultrarelativistic heavy-ion collisions

Abstract

We develop a 1+1 dimensional hydrodynamical model for central heavy-ion collisions at ultrarelativistic energies. Deviations from Bjorken's scaling are taken into account by implementing finite-size profiles for the initial energy density. The calculated rapidity distributions of pions, kaons and antiprotons in central Au+Au collisions at the c.m. energy 200 AGeV are compared with experimental data of the BRAHMS Collaboration. The sensitivity of the results to the choice of the equation of state, the parameters of initial state and the freeze-out conditions is investigated. Experimental constraints on the total energy of produced particles are used to reduce the number of model parameters. The best fits of experimental data are obtained for soft equations of state and Gaussian-like initial profiles of the energy density. It is found that initial energy densities required for fitting experimental data decrease with increasing critical temperature of the phase transition.

22 pages, 8 figures; 4 figures and 12 references added

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Cited by in corpus (28)

• Directed flow in ultrarelativistic heavy-ion collisions
• Non-boost-invariant anisotropic dynamics
• Nonextensive hydrodynamics for relativistic heavy-ion collisions
• Relating multihadron production in hadronic and nuclear collisions
• Equation of state of hadron resonance gas and the phase diagram of strongly interacting matter
• Unified description of Bjorken and Landau 1+1 hydrodynamics
• The QCD phase diagram and Beam Energy Scan physics: a theory overview
• Rapid hydrodynamic expansion in relativistic heavy-ion collisions
• Dynamical Freeze-out in 3-Fluid Hydrodynamics
• Hydrodynamic modeling of deconfinement phase transition in heavy-ion collisions at NICA-FAIR energies
• Hadron production by quark combination in central Pb+Pb collisions at $\sqrt{s_{NN}}=17.3$ GeV
• Viscous evolution of the rapidity distribution of matter created in relativistic heavy-ion collisions
• Electromagnetic probes of a pure-glue initial state in nucleus-nucleus collisions at energies available at the CERN Large Hadron Collider
• Longitudinal Dynamics of High Baryon Density Matter in High Energy Heavy-Ion Collisions
• Recent results from BRAHMS
• Non-boost-invariant dissipative hydrodynamics
• Rapidity scaling of multiplicity and flow in weakly and strongly interacting systems
• Baryon deceleration by strong chromofields in ultrarelativistic nuclear collisions
• Entropy production in chemically non-equilibrium quark-gluon plasma created in central Pb+Pb collisions at LHC energies
• 1+1 Dimensional Hydrodynamics for High-energy Heavy-ion Collisions
• Longitudinal Viscous Hydrodynamic Evolution for the Shattered Colour Glass Condensate
• The influence of net-quarks on the yields and rapidity spectra of identified hadrons
• Evolution of antibaryon abundances in the early Universe and in heavy-ion collisions
• Longitudinal hydrodynamics from event-by-event Landau initial conditions
• Hydrodynamic modeling of deconfinement phase transition in nuclear collisions
• Dynamics and Stability of Chiral Fluid
• Early dissipation and viscosity
• Entropy Production in Dissipationless Hydrodynamics with an order parameter