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Dr. Mahmoud Hanafy Mahmoud Mohamed Nassar :: Publications:

Particle production and chemical freezeout from the hybrid UrQMD approach at NICA energies
Authors: Abdel Nasser Tawfik1,2*, Loutfy I. Abou-Salem3, Asmaa G. Shalaby2,3, Mahmoud Hanafy2,3, Alexander Sorin4,5,6,7, Oleg Rogachevsky5 and Werner Scheinast5
Year: 2016
Keywords: Not Available
Journal: Eur. Phys. J. A
Volume: 52
Issue: Not Available
Pages: 324
Publisher: Springer-Verlag Berlin Heidelberg, 2016
Local/International: International
Paper Link:
Full paper Mahmoud Hanafy Mahmoud Mohamed_art%3A10.1140%2Fepja%2Fi2016-16324-6.pdf
Supplementary materials Not Available

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 3GeV, 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).

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