The $P_{ψs}^Λ(4338)$ pentaquark and its partners in the molecular picture
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2022
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916446199611392 |
|---|---|
| author | Yan, Mao-Jun Peng, Fang-Zheng Sánchez, Mario Sánchez Valderrama, Manuel Pavon |
| author_facet | Yan, Mao-Jun Peng, Fang-Zheng Sánchez, Mario Sánchez Valderrama, Manuel Pavon |
| contents | The LHCb collaboration has detected a new hidden-charm pentaquark with the quantum numbers of a $Λ$ baryon: the $P_{ψs}^Λ(4338)$. This pentaquark will be interpreted as a $\bar{D}_s Λ_c$-$\bar{D} Ξ_c$ resonance within a contact-range theory. Here we briefly comment on the relation of the new $P_{ψs}^Λ(4338)$ with the $P^Λ_{ψs}(4459)$. We find that the $P_{ψs}^Λ(4338)$ and $P_{ψs}^Λ(4459)$ both accept a common description in terms of the same parameters, which predicts the existence of a few additional $P_ψ^N$, $P_{ψs}^Λ$, $P_{ψs}^Σ$ and $P_{ψs s}^Ξ$ molecular pentaquarks composed of a charmed antimeson and an antitriplet charmed baryon. The most robust of these predicted pentaquarks is a $P_{ψs}^Λ$ with a mass in the $(4235-4255)\,{\rm MeV}$ range, while other two interesting ones are a $P_ψ^{N}(4150)$ and a $P_ψ^Σ(4335)$, the latter basically at the same mass as the $P_ψ^Λ(4338)$, with which it might mix owing to isospin symmetry breaking effects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_11144 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | The $P_{ψs}^Λ(4338)$ pentaquark and its partners in the molecular picture Yan, Mao-Jun Peng, Fang-Zheng Sánchez, Mario Sánchez Valderrama, Manuel Pavon High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory The LHCb collaboration has detected a new hidden-charm pentaquark with the quantum numbers of a $Λ$ baryon: the $P_{ψs}^Λ(4338)$. This pentaquark will be interpreted as a $\bar{D}_s Λ_c$-$\bar{D} Ξ_c$ resonance within a contact-range theory. Here we briefly comment on the relation of the new $P_{ψs}^Λ(4338)$ with the $P^Λ_{ψs}(4459)$. We find that the $P_{ψs}^Λ(4338)$ and $P_{ψs}^Λ(4459)$ both accept a common description in terms of the same parameters, which predicts the existence of a few additional $P_ψ^N$, $P_{ψs}^Λ$, $P_{ψs}^Σ$ and $P_{ψs s}^Ξ$ molecular pentaquarks composed of a charmed antimeson and an antitriplet charmed baryon. The most robust of these predicted pentaquarks is a $P_{ψs}^Λ$ with a mass in the $(4235-4255)\,{\rm MeV}$ range, while other two interesting ones are a $P_ψ^{N}(4150)$ and a $P_ψ^Σ(4335)$, the latter basically at the same mass as the $P_ψ^Λ(4338)$, with which it might mix owing to isospin symmetry breaking effects. |
| title | The $P_{ψs}^Λ(4338)$ pentaquark and its partners in the molecular picture |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2207.11144 |