Production and decay of anticharmed pentaquark state with quark content $\bar{c}sudd$
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| Format: | Preprint |
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2024
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| _version_ | 1866916581099962368 |
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| author | Liu, Shi-Dong Wang, Xiao-Yun Liu, Xiao-Hai Li, Gang |
| author_facet | Liu, Shi-Dong Wang, Xiao-Yun Liu, Xiao-Hai Li, Gang |
| contents | We used an effective Lagrangian approach to investigate the production of the anticharmed pentaquark state $P_{\bar{c}s}^{(*)-}$ with the minimal quark content $\bar{c}sudd$ in the $Λ_b^0$ decay and its decay into the $ΛD^{(\ast)-}$ and $ΣD^{(\ast)-}$. In our calculation, the $P_{\bar{c}s}^{(*)-}$ is considered as the molecule state of the $nD_{s0(s1)}^{-}$ in an $S$ wave, and its production and decay occur via triangle loops at the hadron level. The predicted branching fractions for the processes $Λ_b^0\to P_{\bar{c}s}^{(*)-} D^+ $ are around $10^{-4}\sim 10^{-3}$. The partial decay widths of the $ P_{\bar{c}s}^{(*)-} \to ΛD^{(\ast)-}$ are between $0.1$ and $\sim 10~\mathrm{MeV}$, whereas the decay widths of the $ P_{\bar{c}s}^{(*)-} \to ΣD^{(\ast)-}$ are about one order of magnitude smaller. It is found that the width ratios for the $P_{\bar{c}s}^{(*)-}$ decays are nearly independent of the model parameter $α$. It is hoped that these predictions could be helpful in searching for the anticharmed-strange pentaquark candidates in future LHCb experiments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_01910 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Production and decay of anticharmed pentaquark state with quark content $\bar{c}sudd$ Liu, Shi-Dong Wang, Xiao-Yun Liu, Xiao-Hai Li, Gang High Energy Physics - Phenomenology We used an effective Lagrangian approach to investigate the production of the anticharmed pentaquark state $P_{\bar{c}s}^{(*)-}$ with the minimal quark content $\bar{c}sudd$ in the $Λ_b^0$ decay and its decay into the $ΛD^{(\ast)-}$ and $ΣD^{(\ast)-}$. In our calculation, the $P_{\bar{c}s}^{(*)-}$ is considered as the molecule state of the $nD_{s0(s1)}^{-}$ in an $S$ wave, and its production and decay occur via triangle loops at the hadron level. The predicted branching fractions for the processes $Λ_b^0\to P_{\bar{c}s}^{(*)-} D^+ $ are around $10^{-4}\sim 10^{-3}$. The partial decay widths of the $ P_{\bar{c}s}^{(*)-} \to ΛD^{(\ast)-}$ are between $0.1$ and $\sim 10~\mathrm{MeV}$, whereas the decay widths of the $ P_{\bar{c}s}^{(*)-} \to ΣD^{(\ast)-}$ are about one order of magnitude smaller. It is found that the width ratios for the $P_{\bar{c}s}^{(*)-}$ decays are nearly independent of the model parameter $α$. It is hoped that these predictions could be helpful in searching for the anticharmed-strange pentaquark candidates in future LHCb experiments. |
| title | Production and decay of anticharmed pentaquark state with quark content $\bar{c}sudd$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.01910 |