A1 Journal article (refereed)
Temperatures and chemical potentials at kinetic freeze-out in relativistic heavy ion collisions from coarse grained transport simulations (2020)


Inghirami, Gabriele; Hillmann, Paula Christine; Tomášik, Boris; Bleicher, Marcus (2020). Temperatures and chemical potentials at kinetic freeze-out in relativistic heavy ion collisions from coarse grained transport simulations. Journal of Physics G: Nuclear and Particle Physics, 47 (2), 025104. DOI: 10.1088/1361-6471/ab53f4


JYU authors or editors


Publication details

All authors or editors: Inghirami, Gabriele; Hillmann, Paula Christine; Tomášik, Boris; Bleicher, Marcus

Journal or series: Journal of Physics G: Nuclear and Particle Physics

ISSN: 0954-3899

eISSN: 1361-6471

Publication year: 2020

Volume: 47

Issue number: 2

Article number: 025104

Publisher: Institute of Physics

Publication country: United Kingdom

Publication language: English

DOI: http://doi.org/10.1088/1361-6471/ab53f4

Open Access: Publication channel is not openly available

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/66286

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1909.00643


Abstract

Using the UrQMD/coarse graining approach we explore the kinetic freeze-out stage in central Au + Au collisions at various energies. These studies allow us to obtain detailed information on the thermodynamic properties (e.g. temperature and chemical potential) of the system during the kinetic decoupling stage. We explore five relevant collision energies in detail, ranging from √sNN=2.4 GeV (GSI-SIS) to √sNN=200 GeV (RHIC). By adopting a standard Hadron Resonance Gas equation of state, we determine the average temperature〈T〉and the average baryon chemical potential〈μB〉on the space-time hyper-surface of last interaction. The results highlight the nature of the kinetic freeze-out as a continuous process. This differential decoupling is an important aspect often missed when summarizing data as single points in the phase diagram as e.g. done in Blast-Wave fits. We compare the key properties of the system derived by using our approach with other models and we briefly review similarities and differences.


Keywords: particle physics


Contributing organizations


Related projects

Parton distributions and QCD matter in LHC nuclear collisions
Eskola, Kari
Academy of Finland
01/09/2016-31/08/2020


Ministry reporting: Yes

Reporting Year: 2020

Preliminary JUFO rating: 2


Last updated on 2020-18-08 at 13:08