Chemical freeze-out in heavy ion collisions at large baryon densities
We argue that the chemical freeze-out in heavy ion collisions at high baryon density is not associated to a phase transition or rapid crossover. We employ the linear nucleon-meson model with parameters fixed by the zero-temperature properties of nuclear matter close to the liquid-gas quantum phase t...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2012
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| In: |
Nuclear physics. A, Nuclear and hadronic physics
Year: 2012, Jahrgang: 890/891, Heft: 1, Pages: 11-24 |
| ISSN: | 1873-1554 |
| DOI: | 10.1016/j.nuclphysa.2012.07.009 |
| Online-Zugang: | Resolving-System, Volltext: http://dx.doi.org/10.1016/j.nuclphysa.2012.07.009
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| Verfasserangaben: | Stefan Floerchinger, Christof Wetterich |
MARC
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| 520 | |a We argue that the chemical freeze-out in heavy ion collisions at high baryon density is not associated to a phase transition or rapid crossover. We employ the linear nucleon-meson model with parameters fixed by the zero-temperature properties of nuclear matter close to the liquid-gas quantum phase transition. For the parameter region of interest this yields a reliable picture of the thermodynamic and chiral properties at non-zero temperature. The chemical freeze-out observed in low-energy experiments occurs when baryon densities fall below a critical value of about 15 percent of nuclear density. This region in the phase diagram is far away from any phase transition or rapid crossover. | ||
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| 650 | 4 | |a Heavy ion collisions | |
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