Understanding the $K^*/K$ ratio in heavy ion collisions
| Autor: | Roux, C. Le, Navarra, F. S., Abreu, L. M. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2021.136284 |
| Popis: | We study the $K^*$ meson dissociation in heavy ion collisions during the hadron gas phase. We use the production and absorption cross sections of the $K^*$ and $K$ mesons in a hadron gas, which were calculated in a previous work. We compute the time evolution of the $K^*$ abundance and the $K^* /K$ ratio during the hadron gas phase. Assuming a Bjorken type cooling and using an empirical relation between the freeze-out temperature and the central multiplicity density, we are able to write $K^* /K$ as a function of ($ dN /d \eta (\eta =0)$). The obtained function is in very good agreement with recent experimental data. Comment: 9 pages, 5 figures |
| Databáze: | arXiv |
| Externí odkaz: |
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