Strong decays of the $Λ_{c}(2910)$ and $Λ_{c}(2940)$ in the $ND^{*}$ molecular frame
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| Format: | Preprint |
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2024
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| _version_ | 1866909210781941760 |
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| author | Yue, Zi-Li Guo, Quan-Yun Chen, Dian-Yong |
| author_facet | Yue, Zi-Li Guo, Quan-Yun Chen, Dian-Yong |
| contents | Stimulated by the observation of a new structure, named $Λ_{c}(2910)$, in the $Σ_{c}(2455)^{0,++}π^{+,-}$ decay channel from B meson decay process by the Belle Collaboration, and the similarity of the $Λ_{c}(2910)/Λ_{c}(2940)$ and $P_{c}$ states, we investigate the decay behavior of the $Λ_{c}(2910)$ and $Λ_{c}(2940)$ in the $N D^{*}$ molecular frame with the possible $J^{P}$ quantum numbers to be $1/2^{-}$ and $3/2^{-}$. We employ an effective Lagrangian approach to evaluate the partial widths of $ND$, $Σ_{c}π$ and $Σ_{c}^{*}π$ channels. The estimations in the present work indicate that the $J^P$ quantum numbers of $Λ_{c}(2910)$ and $Λ_{c}(2940)$ are preferred to be $1/2^{-}$ and $3/2^{-}$, respectively. From the present estimations, we also find the branching ratio of $Λ_c(3/2) \to Σ_c^\ast π$ is much larger than that of $Λ_c(1/2) \to Σ_c^\ast π$, thus $Σ_{c}^{*}π$ could be a good channel to distinguish the $J^{P}$ quantum numbers of $Λ_{c}(2910)$ and $Λ_{c}(2940)$. Therefore, we suggest to searching for the structure in $Σ_{c}^{*}π$ invariant mass distribution in Belle $\amalg$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2402_10594 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Strong decays of the $Λ_{c}(2910)$ and $Λ_{c}(2940)$ in the $ND^{*}$ molecular frame Yue, Zi-Li Guo, Quan-Yun Chen, Dian-Yong High Energy Physics - Phenomenology Stimulated by the observation of a new structure, named $Λ_{c}(2910)$, in the $Σ_{c}(2455)^{0,++}π^{+,-}$ decay channel from B meson decay process by the Belle Collaboration, and the similarity of the $Λ_{c}(2910)/Λ_{c}(2940)$ and $P_{c}$ states, we investigate the decay behavior of the $Λ_{c}(2910)$ and $Λ_{c}(2940)$ in the $N D^{*}$ molecular frame with the possible $J^{P}$ quantum numbers to be $1/2^{-}$ and $3/2^{-}$. We employ an effective Lagrangian approach to evaluate the partial widths of $ND$, $Σ_{c}π$ and $Σ_{c}^{*}π$ channels. The estimations in the present work indicate that the $J^P$ quantum numbers of $Λ_{c}(2910)$ and $Λ_{c}(2940)$ are preferred to be $1/2^{-}$ and $3/2^{-}$, respectively. From the present estimations, we also find the branching ratio of $Λ_c(3/2) \to Σ_c^\ast π$ is much larger than that of $Λ_c(1/2) \to Σ_c^\ast π$, thus $Σ_{c}^{*}π$ could be a good channel to distinguish the $J^{P}$ quantum numbers of $Λ_{c}(2910)$ and $Λ_{c}(2940)$. Therefore, we suggest to searching for the structure in $Σ_{c}^{*}π$ invariant mass distribution in Belle $\amalg$. |
| title | Strong decays of the $Λ_{c}(2910)$ and $Λ_{c}(2940)$ in the $ND^{*}$ molecular frame |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2402.10594 |