2010/12/10 by Iu. A. ~Karpenko, Iu. A. Karpenko, ~Karpenko, Iu. A. +9
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.1012.2312
12 pages, 3 figures
arxiv created 2010/12/10 · openalex publication_date 2010/12/10 · arxiv updated 2010/12/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The hydrokinetic model and the scheme of dynamical freeze out proposed earlier for the RHIC energy are extended to lower colliding energy for non-vanishing baryon chemical potential. In this case a new two-phase equation of state is applied where baryon-rich hadronic matter is described within modified relativistic mean-field theory. As an example, the approach is employed for analyzing pion and kaon spectra and interferometry radii of Pb+Pb collisions at laboratory energies 40 and 158 AGeV. A good agreement is observed for the transverse mass dependence of the longitudinal radius for both energies studied. The transverse radii Rout, Rside reproduce experiment at Elab=158 AGeV but at Elab=40 AGeV there is a marked (20 %) difference from experimental points. This discrepancy is more noticeable in analysis of the ratio Rout/Rside. Nevertheless, considered examples of application of the hydrokinetic model with equation of state including the first order phase transition are quite successful and further development of the model is required.