Staff Members - Benha University
Particle production and chemical freezeout from the hybrid UrQMD approach at NICA energies
THE EUROPEAN PHYSICAL JOURNAL A • 2016
Publication Information
Authors
Abdel Nasser Tawfik1,2,a, Loutfy I. Abou-Salem3, Asmaa G. Shalaby2,3, Mahmoud Hanafy2,3, Alexander Sorin4,5,6,7,
Oleg Rogachevsky5, and Werner Scheinast5
Keywords
Not Available
Journal
THE EUROPEAN PHYSICAL JOURNAL A
Publisher
Not Available
Volume
52
Issue
Not Available
Pages
324
publication.type
International
Paper Link
Not Available
Supplementary Materials
Not Available
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).
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).