Harabasz, Szymon ; Florkowski, Wojciech ; Galatyuk, Tetyana ; Gumberidze, Małgorzata ; Ryblewski, Radoslaw ; Salabura, Piotr ; Stroth, Joachim (2020)
Statistical hadronization model for heavy-ion collisions in the few-GeV energy regime.
In: Physical Review C, 102 (5)
doi: 10.1103/PhysRevC.102.054903
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We show that the transverse-mass and rapidity spectra of protons and pions produced in Au-Au collisions at sNN=2.4 GeV can be well reproduced in a thermodynamic model assuming single freeze-out of particles from a spherically symmetric hypersurface. This scenario corresponds to a physical picture used by Siemens and Rasmussen in the original formulation of the blast-wave model. Our framework modifies and extends this approach by incorporation of a Hubble-like expansion of QCD matter and inclusion of resonance decays. In particular, the Δ(1232) resonance is taken into account, with a width obtained from the virial expansion. Altogether, our results bring evidence for substantial thermalization of the matter produced in heavy-ion collisions in the few-GeV energy regime and its nearly spherical expansion.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Harabasz, Szymon ; Florkowski, Wojciech ; Galatyuk, Tetyana ; Gumberidze, Małgorzata ; Ryblewski, Radoslaw ; Salabura, Piotr ; Stroth, Joachim |
| Art des Eintrags: | Bibliographie |
| Titel: | Statistical hadronization model for heavy-ion collisions in the few-GeV energy regime |
| Sprache: | Englisch |
| Publikationsjahr: | November 2020 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review C |
| Jahrgang/Volume einer Zeitschrift: | 102 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1103/PhysRevC.102.054903 |
| URL / URN: | https://link.aps.org/doi/10.1103/PhysRevC.102.054903 |
| Kurzbeschreibung (Abstract): | We show that the transverse-mass and rapidity spectra of protons and pions produced in Au-Au collisions at sNN=2.4 GeV can be well reproduced in a thermodynamic model assuming single freeze-out of particles from a spherically symmetric hypersurface. This scenario corresponds to a physical picture used by Siemens and Rasmussen in the original formulation of the blast-wave model. Our framework modifies and extends this approach by incorporation of a Hubble-like expansion of QCD matter and inclusion of resonance decays. In particular, the Δ(1232) resonance is taken into account, with a width obtained from the virial expansion. Altogether, our results bring evidence for substantial thermalization of the matter produced in heavy-ion collisions in the few-GeV energy regime and its nearly spherical expansion. |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik > Untersuchung von Quark-Materie mit virtuellen Photonen |
| Hinterlegungsdatum: | 14 Sep 2021 16:52 |
| Letzte Änderung: | 14 Jan 2024 10:31 |
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