Pushing the hybrid approach to low beam energies with dynamic initial conditions from hadronic transport
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917205378072576 |
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| author | Góes-Hirayama, Renan Egger, Joscha Paulínyová, Zuzana Karpenko, Iurii Elfner, Hannah |
| author_facet | Góes-Hirayama, Renan Egger, Joscha Paulínyová, Zuzana Karpenko, Iurii Elfner, Hannah |
| contents | While hybrid approaches of relativistic hydrodynamics+transport have been well established for the dynamical description of heavy-ion collisions at high beam energies, moving to lower beam energies is challenging. In this work, we propose dynamic initial conditions for the viscous hydrodynamic evolution in heavy-ion collisions at low to intermediate beam energies. They are comprised of core hadrons based on the local energy density during the pre-equilibrium hadronic evolution. The SMASH-vHLLE hybrid approach is then applied to lower beam energies, achieving good agreement with measured bulk observables between $\sqrt{s_\mathrm{NN}} = 3$ and $9.1\ \mathrm{GeV}$, thus providing guidance for measurements in STAR-BES and CBM at FAIR. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_19389 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Pushing the hybrid approach to low beam energies with dynamic initial conditions from hadronic transport Góes-Hirayama, Renan Egger, Joscha Paulínyová, Zuzana Karpenko, Iurii Elfner, Hannah High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory While hybrid approaches of relativistic hydrodynamics+transport have been well established for the dynamical description of heavy-ion collisions at high beam energies, moving to lower beam energies is challenging. In this work, we propose dynamic initial conditions for the viscous hydrodynamic evolution in heavy-ion collisions at low to intermediate beam energies. They are comprised of core hadrons based on the local energy density during the pre-equilibrium hadronic evolution. The SMASH-vHLLE hybrid approach is then applied to lower beam energies, achieving good agreement with measured bulk observables between $\sqrt{s_\mathrm{NN}} = 3$ and $9.1\ \mathrm{GeV}$, thus providing guidance for measurements in STAR-BES and CBM at FAIR. |
| title | Pushing the hybrid approach to low beam energies with dynamic initial conditions from hadronic transport |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2507.19389 |