Towards the LHCb pentaquark modes in the single-charm sector
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866914164519206912 |
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| author | Shen, Chao-Wei Lin, Yong-Hui Jing, Hao-Jie |
| author_facet | Shen, Chao-Wei Lin, Yong-Hui Jing, Hao-Jie |
| contents | The mass spectrum of $Λ_c$ baryon family is investigated within the $DN$-$D^*N$ coupled-channel framework using two phenomenological approaches for the low-energy $D^{(*)} N$ interactions: the heavy quark effective theory and the flavor-symmetry-constrained effective Lagrangian method. It is shown that the LHCb pentaquark states have direct analogs in the $Λ_c$ family. Specifically, $Λ_c(2765)$, $Λ_c(2910)$, and $Λ_c(2940)$ mirror the patterns of $P_{c\bar{c}}(4312)$, $P_{c\bar{c}}(4440)$, and $P_{c\bar{c}}(4457)$, respectively. These mirror pentaquark modes offer valuable insights into the quantum numbers of the two heavy $P_{c\bar{c}}$ states, which remain experimentally undetermined. Further exploration of such correlations among exotic hadronic states across different flavor sectors will be crucial for developing a comprehensive theoretical understanding of the modern hadron spectrum. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_15649 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Towards the LHCb pentaquark modes in the single-charm sector Shen, Chao-Wei Lin, Yong-Hui Jing, Hao-Jie High Energy Physics - Phenomenology The mass spectrum of $Λ_c$ baryon family is investigated within the $DN$-$D^*N$ coupled-channel framework using two phenomenological approaches for the low-energy $D^{(*)} N$ interactions: the heavy quark effective theory and the flavor-symmetry-constrained effective Lagrangian method. It is shown that the LHCb pentaquark states have direct analogs in the $Λ_c$ family. Specifically, $Λ_c(2765)$, $Λ_c(2910)$, and $Λ_c(2940)$ mirror the patterns of $P_{c\bar{c}}(4312)$, $P_{c\bar{c}}(4440)$, and $P_{c\bar{c}}(4457)$, respectively. These mirror pentaquark modes offer valuable insights into the quantum numbers of the two heavy $P_{c\bar{c}}$ states, which remain experimentally undetermined. Further exploration of such correlations among exotic hadronic states across different flavor sectors will be crucial for developing a comprehensive theoretical understanding of the modern hadron spectrum. |
| title | Towards the LHCb pentaquark modes in the single-charm sector |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.15649 |