Investigating $Z_{cs}(3985)$ and $Z_{cs}(4000)$ exotic states in $\Lambda_b\to Z^-_{cs}p$ decays
| Autor: | Yu, Yao, Xiong, Zhuang, Zhang, Han, Ke, Bai-Cian, Zhang, Jia-Wei, He, Dong-Ze, Zhou, Rui-Yu |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Lett. B 848 (2024) 138363 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2023.138363 |
| Popis: | We study the $Z_{cs}(3985)$ and $Z_{cs}(4000)$ exotic states in the decays of $\Lambda_b$ baryons through a molecular scenario. In the final state interaction, the $\Lambda_b\to \Lambda_c^+ D_s^{(*)-}$ decays are followed by the $\Lambda_c^+ D_s^{(*)-}$ to $Z^-_{cs}p$ rescatterings via exchange of a $D^{(*)}$ meson. We predict a branching fraction of $(3.1^{+1.4}_{-2.6})\times 10^{-4}$ for $\Lambda_b\to Z^-_{cs}p$, which can be measured in the $\Lambda_b\to J/\psi K^{(*)-}p$ decay. This study proposes a new approach to test the molecular model, and guides future experimental searches for the $Z_{cs}(3985)$ and $Z_{cs}(4000)$. Comment: 13 pages, 3 figures |
| Databáze: | arXiv |
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