$P_c$-like pentaquarks in hidden strange sector

Abstract

Analogous to the work of hidden charm molecular pentaquarks, we study possible hidden strange molecular pentaquarks composed of $\Sigma$ (or ${\Sigma }^{\ast }$) and $K$ (or $K^{\ast }$) in the framework of quark delocalization color screening model. Our results suggest that the $\Sigma K$, $\Sigma K^{\ast }$ and ${\Sigma }^{\ast }{K}^{\ast }$ with $I{J}^P=\frac{1}{2}{\frac{1}{2}}^{-}$ and $\Sigma K^{\ast }$, ${\Sigma }^{\ast }K$ and ${\Sigma }^{\ast }{K}^{\ast }$ with $I{J}^P=\frac{1}{2}{\frac{3}{2}}^{-}$ are all resonance states by coupling the open channels. The molecular pentaquark ${\Sigma }^{\ast }K$ with quantum numbers $I{J}^P=\frac{1}{2}{\frac{3}{2}}^{-}$ can be seen as a strange partner of the LHCb $P_c(4380)$ state, and it can be identified as the nucleon resonance $N^{\ast }(1875)$ listed in PDG. The $\Sigma K^{\ast }$ with quantum numbers $I{J}^P=\frac{1}{2}{\frac{3}{2}}^{-}$ can be identified as the $N^{\ast }(2100)$, which was experimentally observed in the $\varphi$ photo-production.

8 pages, 2 figures

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Cited by in corpus (19)

• Pentaquark and Tetraquark states
• Full-heavy tetraquarks in constituent quark models
• Photoproduction of hidden-bottom pentaquark and related topics
• Spectrum of the molecular pentaquarks
• Can $\Omega (2012)$ be explained as a molecular state?
• Observation of a cusp-like structure in the $\gamma p\to K^{+}{\Sigma }^0$ cross section at forward angles and low momentum transfer
• Pentaquark components in low-lying baryon resonances
• Investigating tetraquarks composed of $us\bar{d}\bar{b}$ and $ud\bar{s}\bar{b}$
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• Hidden-strange molecular states and the $N\varphi$ bound state via a QCD van der Waals force
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• Interaction and Identification of the Meson-Baryon molecules
• The ${\Omega }_{cc}$ resonances with negative parity in the chiral constituent quark model
• QCD sum rule study for hidden-strange pentaquarks
• Investigate the pentaquark resonance in the $NK$ system
• Study of the hidden charm pentaquarks ${\Lambda }_{c\bar{c}}$ above $4$ GeV
• Baryons and baryoniums in the perspective of QCD sum rules
• Strange pentaquark molecules in QCD sum rules
• Complete basis for the pentaquark wave function in a group theory approach