Search for ∆S = 2 nonleptonic hyperon decays Ω − → Σ 0 π − and Ω − → nK −

Journal article

Using (27.12 ± 0.14) × 108ψ(3686) events collected by the BESIII detector at the center-of-mass energy of s = 3.686 GeV, we search for the first time for two nonleptonic hyperon decays that change strangeness by two units, Ω− → Σ0π− and Ω− → nK−. No significant signal is observed. The upper limits on their decay branching fractions are determined to be B(Ω− → Σ0π−) < 5.4 × 10−4 and B(Ω− → nK−) < 2.4 × 10−4 at the 90% confidence level.

Authors: Ablikim, M; Achasov, MN; Adlarson, P; Afedulidis, O; Ai, XC

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2024
• Issue: 5
• Article number: 141
• Publication date: 2024-05-13
• Acceptance date: 2024-04-24
• DOI: 10.1007/jhep05(2024)141
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: Beyond Standard Model; e+-e− Experiments; Rare Decay