Cluster production and the chemical freeze-out in expanding hot dense matter
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929664600047616 |
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| author | Blaschke, D. Liebing, S. Röpke, G. Dönigus, B. |
| author_facet | Blaschke, D. Liebing, S. Röpke, G. Dönigus, B. |
| contents | We discuss medium effects on light cluster production in the QCD phase diagram by relating Mott transition lines to those for chemical freeze-out. In heavy-ion collisions at highest energies provided by the LHC, light cluster abundances should follow the statistical model because of low baryon densities. Chemical freeze-out in this domain is correlated with the QCD crossover transition. At low energies, in the nuclear fragmentation region, where the freeze-out interferes with the liquid-gas phase transition, self-energy and Pauli blocking effects are important. We demonstrate that at intermediate energies the chemical freeze-out line correlates with the maximum mass fraction of nuclear bound states, in particular $α$ particles. In this domain, the HADES, FAIR and NICA experiments can give new insights. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_01399 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cluster production and the chemical freeze-out in expanding hot dense matter Blaschke, D. Liebing, S. Röpke, G. Dönigus, B. Nuclear Theory High Energy Physics - Phenomenology We discuss medium effects on light cluster production in the QCD phase diagram by relating Mott transition lines to those for chemical freeze-out. In heavy-ion collisions at highest energies provided by the LHC, light cluster abundances should follow the statistical model because of low baryon densities. Chemical freeze-out in this domain is correlated with the QCD crossover transition. At low energies, in the nuclear fragmentation region, where the freeze-out interferes with the liquid-gas phase transition, self-energy and Pauli blocking effects are important. We demonstrate that at intermediate energies the chemical freeze-out line correlates with the maximum mass fraction of nuclear bound states, in particular $α$ particles. In this domain, the HADES, FAIR and NICA experiments can give new insights. |
| title | Cluster production and the chemical freeze-out in expanding hot dense matter |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2408.01399 |