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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| Accès en ligne: | https://arxiv.org/abs/2509.07568 |
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| _version_ | 1866911575100620800 |
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| author | Chabane, Amine Reichert, Tom Steinheimer, Jan Bleicher, Marcus |
| author_facet | Chabane, Amine Reichert, Tom Steinheimer, Jan Bleicher, Marcus |
| contents | We investigate the production and suppression of short-lived $K^*(892)$ resonances in p+p and Ar+Sc collisions at CERN-SPS energies ($\sqrt{s_{\mathrm{NN}}} = $ 8.8, 11.9, and 16.8~GeV) using the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model. We present multiplicities, rapidity and transverse momentum distributions, and analyze the $K^*/K$ yield ratios as a function of energy and centrality. We further estimate the time interval between chemical and kinetic freeze-out using the experimental method. A detailed comparison with recent NA61/SHINE data demonstrates that the UrQMD model captures the essential features of resonance dynamics, although the very strong resonance suppression in central collisions observed in the data cannot be quantitatively reproduced. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_07568 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $K^*(892)$ Resonance Suppression in Ar+Sc Collisions at SPS Energies Chabane, Amine Reichert, Tom Steinheimer, Jan Bleicher, Marcus Nuclear Theory We investigate the production and suppression of short-lived $K^*(892)$ resonances in p+p and Ar+Sc collisions at CERN-SPS energies ($\sqrt{s_{\mathrm{NN}}} = $ 8.8, 11.9, and 16.8~GeV) using the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model. We present multiplicities, rapidity and transverse momentum distributions, and analyze the $K^*/K$ yield ratios as a function of energy and centrality. We further estimate the time interval between chemical and kinetic freeze-out using the experimental method. A detailed comparison with recent NA61/SHINE data demonstrates that the UrQMD model captures the essential features of resonance dynamics, although the very strong resonance suppression in central collisions observed in the data cannot be quantitatively reproduced. |
| title | $K^*(892)$ Resonance Suppression in Ar+Sc Collisions at SPS Energies |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2509.07568 |