Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations
We present realistic estimates for the duration of the hadronic stage in central Au+Au reactions in the RHIC-BES energy regime. To this aim, we employ a full set of coupled rate equations to describe the time evolution of the system from chemical to kinetic freeze-out. Combined with the recently mea...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325000991 |
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| author | Tim Neidig Apiwit Kittiratpattana Tom Reichert Amine Chabane Carsten Greiner Marcus Bleicher |
| author_facet | Tim Neidig Apiwit Kittiratpattana Tom Reichert Amine Chabane Carsten Greiner Marcus Bleicher |
| author_sort | Tim Neidig |
| collection | DOAJ |
| description | We present realistic estimates for the duration of the hadronic stage in central Au+Au reactions in the RHIC-BES energy regime. To this aim, we employ a full set of coupled rate equations to describe the time evolution of the system from chemical to kinetic freeze-out. Combined with the recently measured data by the STAR collaboration on K⁎/K ratios, we show that the previous estimates substantially underestimated the duration of this stage due to the omission of the regeneration of hadron resonances. We provide an improved relation between the K⁎/K ratio at chemical and kinetic freeze-out and the life time of the hadronic phase. The calculated improved life times are now in line with estimates from other methods and are relevant for the NA61 and STAR collaborations and for upcoming experiments at the FAIR facility. |
| format | Article |
| id | doaj-art-01781a5afffa4235bc2d5442b438a653 |
| institution | DOAJ |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
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| series | Physics Letters B |
| spelling | doaj-art-01781a5afffa4235bc2d5442b438a6532025-08-20T02:59:53ZengElsevierPhysics Letters B0370-26932025-03-0186213933910.1016/j.physletb.2025.139339Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equationsTim Neidig0Apiwit Kittiratpattana1Tom Reichert2Amine Chabane3Carsten Greiner4Marcus Bleicher5Institut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany; Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, Campus Frankfurt, Max-von-Laue-Str. 12, 60438 Frankfurt am Main, GermanyInstitut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany; Center of Excellence in High Energy Physics and Astrophysics, School of Physics, Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima 30000, ThailandInstitut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany; Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, Campus Frankfurt, Max-von-Laue-Str. 12, 60438 Frankfurt am Main, GermanyInstitut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany; Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, Campus Frankfurt, Max-von-Laue-Str. 12, 60438 Frankfurt am Main, GermanyInstitut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany; Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, Campus Frankfurt, Max-von-Laue-Str. 12, 60438 Frankfurt am Main, GermanyInstitut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany; Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, Campus Frankfurt, Max-von-Laue-Str. 12, 60438 Frankfurt am Main, Germany; Corresponding author.We present realistic estimates for the duration of the hadronic stage in central Au+Au reactions in the RHIC-BES energy regime. To this aim, we employ a full set of coupled rate equations to describe the time evolution of the system from chemical to kinetic freeze-out. Combined with the recently measured data by the STAR collaboration on K⁎/K ratios, we show that the previous estimates substantially underestimated the duration of this stage due to the omission of the regeneration of hadron resonances. We provide an improved relation between the K⁎/K ratio at chemical and kinetic freeze-out and the life time of the hadronic phase. The calculated improved life times are now in line with estimates from other methods and are relevant for the NA61 and STAR collaborations and for upcoming experiments at the FAIR facility.http://www.sciencedirect.com/science/article/pii/S0370269325000991 |
| spellingShingle | Tim Neidig Apiwit Kittiratpattana Tom Reichert Amine Chabane Carsten Greiner Marcus Bleicher Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations Physics Letters B |
| title | Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations |
| title_full | Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations |
| title_fullStr | Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations |
| title_full_unstemmed | Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations |
| title_short | Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations |
| title_sort | determining the duration of the hadronic stage at rhic bes energies via resonance suppression using a full set of rate equations |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325000991 |
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