Evidence of the h_c→ K_S⁰ K⁺π^-+c.c. decay

2024/04/04 by BESIII Collaboration, М. Н. Ачасов, Ablikim, M. +737
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2404.03217

openalex publication_date 2024/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

Based on (2.712±0.014)×10⁹ ψ(3686) events collected by the BESIII collaboration, evidence of the hadronic decay h_c→ K_S⁰K⁺π^-+c.c. is found with a significance of 4.3σ in the ψ(3686)→π⁰ h_c process. The branching fraction of h_c→ K_S⁰ K⁺π^- +c.c. is measured to be (7.3±0.8±1.8)×10^-4, where the first and second uncertainties are statistical and systematic, respectively. Combining with the exclusive decay width of η_c→ KKπ, our result indicates inconsistencies with both pQCD and NRQCD predictions.

Related

• Search for new hadronic decays of h_c and observation of h_c→ ppη
• Search for the decay h_c→π⁰J/ψ
• Search for χ_c1→ π⁺π^-η_c via ψ(3686)→γχ_c1
• Observation of ψ(3686) → Ξ^- K⁰_S Ω⁺ +c.c
• Measurement of the Branching Fraction for the Decay χ_cJ→ ppηπ⁰