Rich structure of the hidden-charm pentaquarks near threshold regions

2022/09/21 by Alessandro Giachino, Giachino, Alessandro, Atsushi Hosaka +9 · 2 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2209.10413

openalex publication_date 2022/09/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The recent abundant observations of pentaquarks and tetraquarks by high-energy accelerator facilities indicate the realization of the conjecture by Gell-Mann and Zweig, and by De Rujula, Georgi and Glashow [1-3]. We construct a coupled-channel model for the hidden-charm pentaquarks with strangeness whose quark content is udsc c, P_cs, described as Λ_c D_s^(*), Ξ_c^('*) D^(*) molecules coupled to the five-quark states. These molecules are formed by the suitable cooperation of heavy quark and chiral symmetries. We reproduce the experimental mass and quantum numbers J^P of P_cs(4338) for which LHCb has just announced the discovery. We make other predictions for new P_cs states as molecular states near threshold regions that can be studied by LHCb.

Cited by

• Quark-model search for compact c c uds pentaquark states
• Electromagnetic characteristics as probes into the inner structures of the predicted Ξ_c^(',*)D^(*)_s molecular states

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• Role of the short-range dynamics in simultaneous interpretation of P_cs pentaqurks via Ξ_c^(′,*)D^(*) molecules