Production of $P_{cs}(4459)$ from $\varXi_b$ Decay
Qi Wu1 , Dian-Yong Chen1* , and Ran Ji2
1 School of Physics, Southeast University, Nanjing 210094, China2 Research School of Physics, Australian National University, Canberra 2601, Australia
Abstract ：Inspired by the $P_{cs}(4459)$ reported by the LHCb collaboration recently, we investigate the $P_{cs}(4459)$ production from $\varXi_b$ decay in a molecular scenario using an effective Lagrangian approach. With different $J^P$ assignments to $P_{cs}(4459)$, the magnitude of branching fractions of $\varXi_b \to P_{cs}(4459) K$ is estimated, which is of the order of $10^{-4}$. Together with the decay properties of $P_{cs}(4459)$, the present estimations could be further testified by precise measurements and contribute to a better understanding of the molecular interpretations and the exploration of $J^P$ quantum numbers of $P_{cs}(4459)$.
收稿日期: 2021-04-07
出版日期: 2021-07-03
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2021, Vol. 38 
