Distribution of hyperons in 200A GeV Au-Au in smoothed particle hydrodynamics

Abstract

The transverse momentum distributions of hadrons in 200GeV Au-Au collisions at RHIC are calculated using the smoothed particle hydrodynamics code SPheRIO. They are compared with data from STAR and PHOBOS Collaborations. By employing an equation of state which explicitly incorporates the strangeness conservation and introducing strangeness chemical potential into the code, the transverse spectra give a reasonable description of experimental data, except the multiplicities of hyperons.

Longitudinal dependence of two-particle momentum correlations from the hydrodynamic flow model NEXSPHERIO

“…NEXSPHERIO [40,41] combines the event generator NEXUS [42] and the hydrodynamical code SPHERIO [43] to simulate particle production in A + A collisions. NEXUS provides for initial parton-parton interactions and energy deposition with lumpy initial conditions (ICs) specified in terms of number density, energy density and baryon density.…”

Topology Studies of Hydrodynamics Using Two-Particle Correlation Analysis

“…In the SPHERIO code, hydrodynamical equations of motion -that represent energy-momentum conservation laws -are solved in method [10], without the use of any symmetry simplifications. More details can be found in [11,12]. After some time of the evolution the local thermal equilibrium pre-condition is no longer valid and decoupling criterion is employed when hadrons are then generated through the Cooper-Frye procedure [13].…”

NeXSPheRIO results on azimuthal anisotropy in Au–Au collisions at 200AGeV

“…As it was shown [22], hydrodynamic model without chemical freeze-out gives good description of transverse momentum spectra of light hadrons. While it reproduces the shape of spectra for hyperons and anti-protons, there are visible discrepancies in the multiplicities.…”