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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | https://arxiv.org/abs/2506.09262 |
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| _version_ | 1866916822073212928 |
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| author | Song, Jing Oset, Eulogio |
| author_facet | Song, Jing Oset, Eulogio |
| contents | We study exotic baryon systems composed of anticharmed mesons and strange baryons using the extended local hidden gauge approach. By solving the coupled-channel Bethe-Salpeter equation with interaction kernels from vector meson exchange, we explore the formation of hadronic molecular states in sectors with strangeness $S = -1$, $-2$, $-3$ and $-4$. {We systematically consider all possible isospin configurations and include both octet and decuplet baryons in the coupled-channel systems.} \textcolor{black}{Our results indicate that attractive interactions in $S=-1,-2$ can dynamically generate bound states, while systems with $S=-3,-4$ have repulsive interactions and do not support molecular formation.} We also investigate vector-baryon systems with $\bar{D}^*$ and $\bar{D}_s^*$ mesons, finding similar but more deeply bound states. The results show that bound exotic states are more likely when one or two strange quarks are present. {To assess the robustness of our predictions, we perform an uncertainty analysis by varying the cutoff parameter \( q_{\text{max}} \), which affects the loop function regularization. The variations lead to moderate shifts in the pole positions, confirming the qualitative stability of the molecular states.} These results highlight the strangeness dependence of the molecular formation mechanism and provide theoretical predictions that can guide future experimental searches for exotic multistrange-anticharm baryon systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_09262 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Exotic multistrange-anticharm baryon systems Song, Jing Oset, Eulogio High Energy Physics - Phenomenology We study exotic baryon systems composed of anticharmed mesons and strange baryons using the extended local hidden gauge approach. By solving the coupled-channel Bethe-Salpeter equation with interaction kernels from vector meson exchange, we explore the formation of hadronic molecular states in sectors with strangeness $S = -1$, $-2$, $-3$ and $-4$. {We systematically consider all possible isospin configurations and include both octet and decuplet baryons in the coupled-channel systems.} \textcolor{black}{Our results indicate that attractive interactions in $S=-1,-2$ can dynamically generate bound states, while systems with $S=-3,-4$ have repulsive interactions and do not support molecular formation.} We also investigate vector-baryon systems with $\bar{D}^*$ and $\bar{D}_s^*$ mesons, finding similar but more deeply bound states. The results show that bound exotic states are more likely when one or two strange quarks are present. {To assess the robustness of our predictions, we perform an uncertainty analysis by varying the cutoff parameter \( q_{\text{max}} \), which affects the loop function regularization. The variations lead to moderate shifts in the pole positions, confirming the qualitative stability of the molecular states.} These results highlight the strangeness dependence of the molecular formation mechanism and provide theoretical predictions that can guide future experimental searches for exotic multistrange-anticharm baryon systems. |
| title | Exotic multistrange-anticharm baryon systems |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2506.09262 |