A Fast Hadron Freeze-out Generator

Abstract

We have developed a fast Monte Carlo procedure of hadron generation allowing one to study and analyze various observables for stable hadrons and hadron resonances produced in ultra-relativistic heavy ion collisions. Particle multiplicities are determined based on the concept of chemical freeze-out. Particles can be generated on the chemical or thermal freeze-out hypersurface represented by a parameterization or a numerical solution of relativistic hydrodynamics with given initial conditions and equation of state. Besides standard space-like sectors associated with the volume decay, the hypersurface may also include non-space-like sectors related to the emission from the surface of expanding system. For comparison with other models and experimental data we demonstrate the results based on the standard parameterizations of the hadron freeze-out hypersurface and flow velocity profile under the assumption of a common chemical and thermal freeze-out. The C++ generator code is written under the ROOT framework and is available for public use at http://uhkm.jinr.ru/.

28 pages,7 figures

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• Study of Heavy Hadron Production in Au + Au Collisions at a Center-of-Mass Energy of $\sqrt{s_{NN}}=200$ GeV
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• Probing Azimuthal Alignment in Heavy-Ion Collisions: Clusterization Effects
• Hubble's Law in Heavy Ion Collisions
• Nature of particles azimuthal anisotropy at low and high transverse momenta in ultrarelativistic A+A collisions
• Study of octupole deformations in Pb-Pb collisions at 5.02 TeV