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Spectrum of the molecular pentaquarks

2024; American Physical Society; Volume: 109; Issue: 7 Linguagem: Inglês

10.1103/physrevd.109.074035

2470-0037

Bo Wang, Kan Chen, Lu Meng, Shi-Lin Zhu,

Spectral Theory in Mathematical Physics

We investigate the mass spectrum of the molecular pentaquarks composed of a baryon and a meson. We establish the underlying relations among the near-threshold interactions of the molecular tetraquark and pentaquark systems. We find the existence of the molecule candidates in the Σ c D ¯ ( * ) , D D * , and D D ¯ * systems indicates a substantial presence of the hadronic molecules in the heavy baryon plus heavy meson systems ( refers to the hadrons with the c and/or s quarks). We make an exhaustive prediction of the possible bound/virtual molecular states in the systems: Σ c ( * ) D ¯ ( * ) , Σ c ( * ) D ( * ) , Ξ c ( ′ , * ) D ¯ ( * ) , Ξ c ( ′ , * ) D ( * ) , Σ c ( * ) K * , Σ c ( * ) K ¯ * , Ξ c ( ′ , * ) K * , Ξ c ( ′ , * ) K ¯ * , Ξ c c ( * ) D ¯ ( * ) , Ξ c c ( * ) D ( * ) , Ξ c c ( * ) K * , Ξ c c ( * ) K ¯ * , Σ ( * ) D ¯ ( * ) , Σ ( * ) D ( * ) , Ξ ( * ) D ¯ ( * ) , Ξ ( * ) D ( * ) , Σ ( * ) K * , Σ ( * ) K ¯ * , Ξ ( * ) K * , Ξ ( * ) K ¯ * . Hunting for the predicted states in experiments will significantly deepen our understanding of the formation mechanism of the hadronic molecules, and shed light on the manifestation of flavor symmetry in the low-energy residual strong interactions. Published by the American Physical Society 2024