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arXiv · 2603.10774

Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Sigma$ mass spectrum via the QCD sum rules

Zhi-Gang Wang·Yang Liu
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Abstract

In this work, we adopt the diquark model, construct the diquark-diquark-antiquark type currents with the light quarks $uus$ in two octets, and study the $uusc\bar{c}$ pentaquark states in the framework of the QCD sum rules systematically. We obtain the mass spectrum of the hidden-charm-singly-strange pentaquark states with the quantum numbers $IJ^{P}=1{\frac{1}{2}}^-$, $1{\frac{3}{2}}^-$ and $1{\frac{5}{2}}^-$. And we can search for those $P_{cs}$ states in the processes $\Sigma_b^+\to P_{cs}^+\phi \to J/\psi \Sigma^+ \,\phi$ and $\Xi_b^0\to P_{cs}^+ K^- \to J/\psi \Sigma^+\, K^-$.

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Zhi-Gang Wang, Yang Liu. 2026-03-11. Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Sigma$ mass spectrum via the QCD sum rules. https://doi.org/10.15302/frontphys.2027.016201

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