A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Temperatures and chemical potentials at kinetic freeze-out in relativistic heavy ion collisions from coarse grained transport simulations (2020)

Inghirami, G., Hillmann, P. C., Tomášik, B., & Bleicher, M. (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), Article 025104. https://doi.org/10.1088/1361-6471/ab53f4

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Inghirami, Gabriele; Hillmann, Paula Christine; Tomášik, Boris; Bleicher, Marcus

Lehti tai sarja: Journal of Physics G: Nuclear and Particle Physics

ISSN: 0954-3899

eISSN: 1361-6471

Julkaisuvuosi: 2020

Volyymi: 47

Lehden numero: 2

Artikkelinumero: 025104

Kustantaja: Institute of Physics

Julkaisumaa: Britannia

Julkaisun kieli: englanti

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

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus: 

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/66286

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/1909.00643

Tiivistelmä

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.

YSO-asiasanat: hiukkasfysiikka

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Raportointivuosi: 2020

JUFO-taso: 2