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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2510.05565 |
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| _version_ | 1866918156993298432 |
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| author | Yusoff, Mohamad Lukman Aidid Mohd Yusof, Norhasliza Kassim, Hasan Abu Steinheimer, Jan Bleicher, Marcus Kittiratpattana, Apiwit Limphirat, Ayut Herold, Christoph |
| author_facet | Yusoff, Mohamad Lukman Aidid Mohd Yusof, Norhasliza Kassim, Hasan Abu Steinheimer, Jan Bleicher, Marcus Kittiratpattana, Apiwit Limphirat, Ayut Herold, Christoph |
| contents | We investigate dimuon production in the context of a first-order phase transition in QCD matter using a chiral fluid dynamics model. This approach incorporates non-equilibrium effects such as entropy production and reheating, which emerge during the dynamical evolution through a first-order phase transition. By comparing equilibrium and non-equilibrium scenarios across a range of beam energies ($\sqrt{s_{NN}}=2.2-6.2$~GeV), we analyze the resulting invariant mass spectra. Our results reveal a substantial enhancement of dilepton yields in the non-equilibrium scenario, particularly pronounced at lower beam energies, where reheating leads to a prolonged lifetime of the fireball and increased emission. The enhancement persists even after normalizing to pion multiplicities, indicating sensitivity beyond effects of entropy production. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_05565 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electromagnetic probes as signatures for a first-order QCD phase transition Yusoff, Mohamad Lukman Aidid Mohd Yusof, Norhasliza Kassim, Hasan Abu Steinheimer, Jan Bleicher, Marcus Kittiratpattana, Apiwit Limphirat, Ayut Herold, Christoph High Energy Physics - Phenomenology We investigate dimuon production in the context of a first-order phase transition in QCD matter using a chiral fluid dynamics model. This approach incorporates non-equilibrium effects such as entropy production and reheating, which emerge during the dynamical evolution through a first-order phase transition. By comparing equilibrium and non-equilibrium scenarios across a range of beam energies ($\sqrt{s_{NN}}=2.2-6.2$~GeV), we analyze the resulting invariant mass spectra. Our results reveal a substantial enhancement of dilepton yields in the non-equilibrium scenario, particularly pronounced at lower beam energies, where reheating leads to a prolonged lifetime of the fireball and increased emission. The enhancement persists even after normalizing to pion multiplicities, indicating sensitivity beyond effects of entropy production. |
| title | Electromagnetic probes as signatures for a first-order QCD phase transition |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.05565 |