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Particle production and chemical freezeout from the hybrid UrQMD approach at NICA energies

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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 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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Authors and Affiliations

  1. Egyptian Center for Theoretical Physics (ECTP), Modern University for Technology and Information (MTI), 11571, Cairo, Egypt

    Abdel Nasser Tawfik

  2. World Laboratory for Cosmology and Particle Physics (WLCAPP), Cairo, Egypt

    Abdel Nasser Tawfik, Asmaa G. Shalaby & Mahmoud Hanafy

  3. Physics Department, Faculty of Science, Benha University, 13518, Benha, Egypt

    Loutfy I. Abou-Salem, Asmaa G. Shalaby & Mahmoud Hanafy

  4. Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Moscow region, Russia

    Alexander Sorin

  5. Veksler and Baldin Laboratory of High Energy Physics, Joint Institute for Nuclear Research, 141980, Dubna, Moscow region, Russia

    Alexander Sorin, Oleg Rogachevsky & Werner Scheinast

  6. National Research Nuclear University (MEPhI), 115409, Moscow, Russia

    Alexander Sorin

  7. Dubna International University, 141980, Dubna, Russia

    Alexander Sorin

Authors
  1. Abdel Nasser Tawfik
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  2. Loutfy I. Abou-Salem
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  3. Asmaa G. Shalaby
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  4. Mahmoud Hanafy
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  5. Alexander Sorin
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  6. Oleg Rogachevsky
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  7. Werner Scheinast
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Correspondence to Abdel Nasser Tawfik.

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Communicated by D. Blaschke

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Nasser Tawfik, A., Abou-Salem, L., Shalaby, A. et al. Particle production and chemical freezeout from the hybrid UrQMD approach at NICA energies. Eur. Phys. J. A 52, 324 (2016). https://doi.org/10.1140/epja/i2016-16324-6

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  • DOI: https://doi.org/10.1140/epja/i2016-16324-6

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