Particle production and chemical freezeout from the hybrid UrQMD approach at NICA energies
arXiv:1609.08423 · doi:10.1140/epja/i2016-16324-6
Abstract
The energy dependence of various particle ratios is calculated within the Ultra-Relativistic Quantum Molecular Dynamics approach and compared with the hadron resonance gas (HRG) model and measurements from various experiments, including RHIC-BES, SPS and AGS. It is found that the UrQMD particle ratios agree well with the experimental results at the RHIC-BES energies. Thus, we have utilized UrQMD in simulating particle ratios at other beam energies down to 3 GeV, which will be accessed at NICA and FAIR future facilities. We observe that the particle ratios for crossover and first-order phase transition, implemented in the hybrid UrQMD v3.4, are nearly indistinguishable, especially at low energies (at large baryon chemical potentials or high density).
13 pages, 5 figures, 2 tables, one reference is added and one paragraph is rephrased. To appear in EPJA
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