Using (27.12 ± 0.14) × 10^8 ψ(3686) events collected by the BESIII detector at the center-of-mass energy of = 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 (Ω− → Σ0π−) < 5.4 × 10^-4 and (Ω− → nK−) < 2.4 × 10^-4 at the 90% confidence level.
Search for ∆S = 2 nonleptonic hyperon decays Ω− → Σ0π− and Ω− → nK−
Amoroso, A.;Bianchi, F.;Destefanis, M.;De Mori, F.;Greco, M.;Maggiora, M.;Marcello, S.;Sosio, S.;Spataro, S.;
2024-01-01
Abstract
Using (27.12 ± 0.14) × 10^8 ψ(3686) events collected by the BESIII detector at the center-of-mass energy of = 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 (Ω− → Σ0π−) < 5.4 × 10^-4 and (Ω− → nK−) < 2.4 × 10^-4 at the 90% confidence level.File in questo prodotto:
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