Global hyperon polarization and effects of decay feeddown
| Autor: | Li, Hui, Xia, Xiao-Liang, Huang, Xu-Guang, Huang, Huan Zhong |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/epjconf/202225911017 |
| Popis: | We study the global polarizations of $\Lambda$, $\Xi^-$, and $\Omega^-$ hyperons in noncentral Au+Au collisions at $\sqrt{s_\mathrm{NN}}=$ 7.7-200 GeV. We highlight the importance of effect of decay feeddown to the measured global polarization. With the decay contributions taken into account, the global polarization ordering $P_{\Omega^-} > P_{\Xi^-} > P_\Lambda$ can be naturally explained, which is consistent with the observation recently reported from the STAR experiment from Au+Au collisions at 200 GeV. We also extend our calculations to predict expectations from the RHIC-BES II data. Comment: 4 pages, 2 figures, contribution to 19th International Conference on Strangeness in Quark Matter (SQM2021) |
| Databáze: | arXiv |
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