Production of $P^Λ_{ψs}(4338)$ from $Ξ_b$ decay
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arXiv
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866914759096401920 |
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| author | Wu, Qi Chen, Dian-Yong |
| author_facet | Wu, Qi Chen, Dian-Yong |
| contents | In the present work, we investigate the production of the newly observed $P^Λ_{ψs}(4338)$ state in $Ξ_b^-$ decay, where the $P^Λ_{ψs}(4338)$ is assigned as a $Ξ_c \bar{D}$ molecular state. By using an effective Lagrangian approach, we evaluate the branching fractions of $Ξ_b^-\rightarrow P^Λ_{ψs}(4338)K^-$ via the triangle loop mechanism. The branching fractions of $Ξ_b^-\rightarrow P^Λ_{ψs}(4338)K^-$ are in the order of $10^{-4}$; the result is compared with our previous work of $Ξ_b^-\rightarrow P^Λ_{ψs}(4459)K^-$. We also predict the ratio of $P^Λ_{ψs}(4459)$ and $P^Λ_{ψs}(4338)$ productions in the decay $Ξ_b^- \to P^Λ_{ψs} K^- \to J/ψΛK^-$. The predicted branching fractions and their ratios could be tested experimentally, which may be helpful for understanding the molecular picture of $P^Λ_{ψs}(4338)$ as well as other hidden-charm pentaquark states with strangeness. Moreover, the experimental potential of observing $P^Λ_{ψs}(4338)$ in the $Ξ^-_b\to K^- J/ψΛ$ is discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_14467 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Production of $P^Λ_{ψs}(4338)$ from $Ξ_b$ decay Wu, Qi Chen, Dian-Yong High Energy Physics - Phenomenology In the present work, we investigate the production of the newly observed $P^Λ_{ψs}(4338)$ state in $Ξ_b^-$ decay, where the $P^Λ_{ψs}(4338)$ is assigned as a $Ξ_c \bar{D}$ molecular state. By using an effective Lagrangian approach, we evaluate the branching fractions of $Ξ_b^-\rightarrow P^Λ_{ψs}(4338)K^-$ via the triangle loop mechanism. The branching fractions of $Ξ_b^-\rightarrow P^Λ_{ψs}(4338)K^-$ are in the order of $10^{-4}$; the result is compared with our previous work of $Ξ_b^-\rightarrow P^Λ_{ψs}(4459)K^-$. We also predict the ratio of $P^Λ_{ψs}(4459)$ and $P^Λ_{ψs}(4338)$ productions in the decay $Ξ_b^- \to P^Λ_{ψs} K^- \to J/ψΛK^-$. The predicted branching fractions and their ratios could be tested experimentally, which may be helpful for understanding the molecular picture of $P^Λ_{ψs}(4338)$ as well as other hidden-charm pentaquark states with strangeness. Moreover, the experimental potential of observing $P^Λ_{ψs}(4338)$ in the $Ξ^-_b\to K^- J/ψΛ$ is discussed. |
| title | Production of $P^Λ_{ψs}(4338)$ from $Ξ_b$ decay |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2402.14467 |