Triple-strangeness hidden-charm pentaquarks
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918260024279040 |
|---|---|
| author | Clymton, Samson Kim, Hyun-Chul Mart, Terry |
| author_facet | Clymton, Samson Kim, Hyun-Chul Mart, Terry |
| contents | We investigate the possible existence of triple-strangeness hidden-charm pentaquark states in the off-shell coupled-channel formalism. The open-charm meson-baryon $\bar{D}_sΩ_c$, $\bar{D}_sΩ_c^*$, $\bar{D}_s^*Ω_c$, and $\bar{D}_s^*Ω_c^*$ channels are considered, together with the hidden-charm $J/ψΩ$ channel. The two-body kernel Feynman amplitudes are constructed from an effective Lagrangian based on hidden local symmetry and heavy-quark spin symmetry. The coupled Blankenbecler-Sugar equation is solved in the partial-wave helicity basis. We observe two triple-strangeness hidden-charm pentaquark states: $P_{c\bar{c}sss}(4787)$ and $P_{c\bar{c}sss}(4841)$, both with $J^P=1/2^-$. The $P_{c\bar{c}sss}(4787)$ couples dominantly to the $\bar{D}_s^*Ω_c$ and $\bar{D}_s^*Ω_c^*$ channels, while the $P_{c\bar{c}sss}(4841)$ couples almost exclusively to the $\bar{D}_s^*Ω_c^*$ channel. The total transition cross sections of $\bar{D}_s^{(\ast)}Ω_c^{(\ast)}\to J/ψ\,Ω$ indicate that the $P_{c\bar{c}sss}(4787)$ is clearly visible in the $J/ψ\,Ω$ invariant mass spectrum, whereas the $P_{c\bar{c}sss}(4841)$ is obscured by cusp structures and background contributions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_12293 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Triple-strangeness hidden-charm pentaquarks Clymton, Samson Kim, Hyun-Chul Mart, Terry High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate the possible existence of triple-strangeness hidden-charm pentaquark states in the off-shell coupled-channel formalism. The open-charm meson-baryon $\bar{D}_sΩ_c$, $\bar{D}_sΩ_c^*$, $\bar{D}_s^*Ω_c$, and $\bar{D}_s^*Ω_c^*$ channels are considered, together with the hidden-charm $J/ψΩ$ channel. The two-body kernel Feynman amplitudes are constructed from an effective Lagrangian based on hidden local symmetry and heavy-quark spin symmetry. The coupled Blankenbecler-Sugar equation is solved in the partial-wave helicity basis. We observe two triple-strangeness hidden-charm pentaquark states: $P_{c\bar{c}sss}(4787)$ and $P_{c\bar{c}sss}(4841)$, both with $J^P=1/2^-$. The $P_{c\bar{c}sss}(4787)$ couples dominantly to the $\bar{D}_s^*Ω_c$ and $\bar{D}_s^*Ω_c^*$ channels, while the $P_{c\bar{c}sss}(4841)$ couples almost exclusively to the $\bar{D}_s^*Ω_c^*$ channel. The total transition cross sections of $\bar{D}_s^{(\ast)}Ω_c^{(\ast)}\to J/ψ\,Ω$ indicate that the $P_{c\bar{c}sss}(4787)$ is clearly visible in the $J/ψ\,Ω$ invariant mass spectrum, whereas the $P_{c\bar{c}sss}(4841)$ is obscured by cusp structures and background contributions. |
| title | Triple-strangeness hidden-charm pentaquarks |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2508.12293 |