2023/09/27 by Yan Ye, Yan, Ye, Xiaohuang Hu +5
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2309.15380
openalex publication_date 2023/09/27 · openalex created_date 2023/09/30 · openalex updated_date 2026/07/28
Inspired by the recent observation of new Ωc0 states by the LHCb Collaboration, we explore the excited Ωc states from the pentaquark perspective in the quark delocalization color screening model. Our results indicate that the Ωc(3185) can be well interpreted as a molecular ΞD predominated resonance state with JP=1/2-. The Ωc(3120) can also be interpreted as a molecular Ξc^* K state with JP=3/2- and a new molecular state Ξ^*c K^* with JP=5/2- and a mass of 3527 MeV is predicted, which is worth searching in the future. Other reported Ωc states cannot be well described in the framework of pentaquark systems in present work. The three-quark excited state, or the unquenched picture may be a good explanation, which is worth further exploration.