The $P_{\psi s}^{\Lambda}(4338)$ pentaquark and its partners in the molecular picture
Phys.Rev.D 107 (2023) 7, 074025 The LHCb collaboration has detected a new hidden-charm pentaquark with the quantum numbers of a $\Lambda$ baryon: the $P_{\psi s}^{\Lambda}(4338)$. This pentaquark will be interpreted as a $\bar{D}_s \Lambda_c$-$\bar{D} \Xi_c$ resonance within a contact-range theory....
Saved in:
Main Authors | , , , |
---|---|
Format | Journal Article |
Language | English |
Published |
22.07.2022
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Phys.Rev.D 107 (2023) 7, 074025 The LHCb collaboration has detected a new hidden-charm pentaquark with the
quantum numbers of a $\Lambda$ baryon: the $P_{\psi s}^{\Lambda}(4338)$. This
pentaquark will be interpreted as a $\bar{D}_s \Lambda_c$-$\bar{D} \Xi_c$
resonance within a contact-range theory. Here we briefly comment on the
relation of the new $P_{\psi s}^{\Lambda}(4338)$ with the $P^{\Lambda}_{\psi
s}(4459)$. We find that the $P_{\psi s}^{\Lambda}(4338)$ and $P_{\psi
s}^{\Lambda}(4459)$ both accept a common description in terms of the same
parameters, which predicts the existence of a few additional $P_{\psi}^N$,
$P_{\psi s}^{\Lambda}$, $P_{\psi s}^{\Sigma}$ and $P_{\psi s s}^{\Xi}$
molecular pentaquarks composed of a charmed antimeson and an antitriplet
charmed baryon. The most robust of these predicted pentaquarks is a $P_{\psi
s}^{\Lambda}$ with a mass in the $(4235-4255)\,{\rm MeV}$ range, while other
two interesting ones are a $P_{\psi}^{N}(4150)$ and a
$P_{\psi}^{\Sigma}(4335)$, the latter basically at the same mass as the
$P_{\psi}^{\Lambda}(4338)$, with which it might mix owing to isospin symmetry
breaking effects. |
---|---|
DOI: | 10.48550/arxiv.2207.11144 |