Abstract
Recent STAR data on the bulk observables in the energy range of the beam energy scan program at the Relativistic Heavy Ion Collider are analyzed within the model of three-fluid dynamics (3FD). The simulations are performed with different equations of state (EoS's). The purely hadronic EoS fails to reproduce the data. A good, though imperfect, overall reproduction of the data is found within the deconfinement scenarios. The crossover EoS turns out to be slightly preferable. For this reproduction a fairly strong baryon stopping in the quark-gluon phase is required. The 3FD model does not need two separate freeze-outs (i.e., kinetic and chemical ones) to describe the STAR data. A unified freeze-out is applied at all energies.
1 More- Received 10 January 2018
DOI:https://doi.org/10.1103/PhysRevC.97.024908
©2018 American Physical Society