2023/04/02 by K. Azizi, Azizi, K., Y. Sarac +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2304.00604
openalex publication_date 2023/04/02 · openalex created_date 2023/04/06 · openalex updated_date 2026/07/28
The recently observed strange pentaquark candidate, PψsΛ(4338)0, is investigated to provide information about its nature and substructure. To this end, its mass and width through the decay channels PψsΛ(4338)0 → J/ψΛ and PψsΛ(4338)0 → ηc Λ are calculated by applying two- and three-point QCD sum rules, respectively. The state is considered as a ΞcD meson-baryon molecular structure with spin-parity quantum numbers JP=(1)/(2)-. The obtained mass, m_PψsΛ(4338)0=4338± 130~MeV, and width, Γ_PψsΛ(4338)0= 10.40± 1.93~MeV, are consistent with the experimental data within the presented uncertainties. This allows us to assign a ΞcD molecular structure of JP=(1)/(2)- for the PψsΛ(4338)0 state.