The masses and decay widths of the $S$-wave $Λ_c\barΛ_c$ bound states
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913405207576576 |
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| author | Cao, Shi-Ji Qi, Jing-Juan Guo, Xin-Heng Wang, Zhen-Yang |
| author_facet | Cao, Shi-Ji Qi, Jing-Juan Guo, Xin-Heng Wang, Zhen-Yang |
| contents | In this work, we investigate possible bound states of the $Λ_c\barΛ_c$ system in the Bethe-Salpeter formalism in the ladder and instantaneous approximations. By numerically solving the Bethe-Salpeter equation, we confirm the existence of $Λ_c\barΛ_c$ bound states with quantum numbers $J^{PC}=0^{-+}$ and $J^{PC}=1^{--}$. We further investigate the partial decay widths of the $Λ_c\barΛ_c$ bound states into $N\bar{N}$, $D\bar{D}$, $D\bar{D}^\ast$, $D^\ast\bar{D}^\ast$, $π\barπ$, and $K\bar{K}$. Our results indicate that the decay width of the $Λ_c\barΛ_c$ bound state with $J^{PC}=1^{--}$ is much larger than that with $J^{PC}=0^{-+}$, and among their decay channels, the $D\bar{D}^\ast$ final state is the main decay mode. We suggest experiments to search for the $Λ_c\barΛ_c$ bound states in the $D\bar{D}^\ast$ final state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_11066 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The masses and decay widths of the $S$-wave $Λ_c\barΛ_c$ bound states Cao, Shi-Ji Qi, Jing-Juan Guo, Xin-Heng Wang, Zhen-Yang High Energy Physics - Phenomenology In this work, we investigate possible bound states of the $Λ_c\barΛ_c$ system in the Bethe-Salpeter formalism in the ladder and instantaneous approximations. By numerically solving the Bethe-Salpeter equation, we confirm the existence of $Λ_c\barΛ_c$ bound states with quantum numbers $J^{PC}=0^{-+}$ and $J^{PC}=1^{--}$. We further investigate the partial decay widths of the $Λ_c\barΛ_c$ bound states into $N\bar{N}$, $D\bar{D}$, $D\bar{D}^\ast$, $D^\ast\bar{D}^\ast$, $π\barπ$, and $K\bar{K}$. Our results indicate that the decay width of the $Λ_c\barΛ_c$ bound state with $J^{PC}=1^{--}$ is much larger than that with $J^{PC}=0^{-+}$, and among their decay channels, the $D\bar{D}^\ast$ final state is the main decay mode. We suggest experiments to search for the $Λ_c\barΛ_c$ bound states in the $D\bar{D}^\ast$ final state. |
| title | The masses and decay widths of the $S$-wave $Λ_c\barΛ_c$ bound states |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2403.11066 |