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Particle production in Au+Au collisions at sNN=11.5−200GeV using the HYDJET++ framework

Gauri Devi1,*, Satya Ranjan Nayak1,†, and B. K. Singh1,2,‡

  • *Contact author: gauri.devi13@bhu.ac.in; gauri1995devi@gmail.com
  • †Contact author: satyanayak@bhu.ac.in
  • ‡Contact author: bksingh@bhu.ac.in, director@iiitdmj.ac.in
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Phys. Rev. C 114, 014916 – Published 27 July, 2026

DOI: https://doi.org/10.1103/5x7p-qk2l

Abstract

Using the HYDJET++ model, we study the production of multistrange particles (ϕ and Ω) in Au+Au collisions at sNN= 11.5, 19.6, 27, 39, and 200 GeV as functions of transverse momentum and centrality. The model calculations employ earlier freeze-out hypersurfaces for multistrange particle production and are compared with STAR experimental data. Results indicate that the ++ model demonstrates a better agreement with experimental data for multistrange particles at higher energies, particularly in relation to early thermal freeze-out. Meanwhile, the default version performs more accurately for lighter, nonstrange particles at the same energy scales. We also analyze identified particle and mixed particle ratios, providing insights into strangeness enhancement. The results provide additional constraints on parton energy loss models, contributing to a more precise determination of the transport properties of hot and dense QCD matter.

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Phys. Rev. C 114, 014916– Published 27 July, 2026
  • Received 22 August 2025
  • Revised 15 June 2026
  • Accepted 9 July 2026
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