Based on (2712.4 pm 14.3) × 10^6 events recorded at the ψ(3686) nominal mass collected with the BESIII detector operating at the BEPCII collider, the ψ(3686)→Σ+Σ ̄−ω and Σ+Σ ̄−φ decays are observed for the first time with statistical significances of 13.8σ and 7.6σ, respectively. The corresponding branching fractions are measured to be B(ψ(3686) → Σ+Σ ̄−ω) = (1.89 pm 0.18 pm 0.21) × 10−5 and B(ψ(3686) → Σ+Σ ̄−φ) = (2.96 pm 0.54 pm 0.41) × 10−6, where the first uncertainties are statistical and the second systematic.
Observation of the ψ(3686) decays into Σ+ Σ ̄ − ω and Σ+ Σ ̄ − φ
Garzia, I.;Gramigna, S.;
2023
Abstract
Based on (2712.4 pm 14.3) × 10^6 events recorded at the ψ(3686) nominal mass collected with the BESIII detector operating at the BEPCII collider, the ψ(3686)→Σ+Σ ̄−ω and Σ+Σ ̄−φ decays are observed for the first time with statistical significances of 13.8σ and 7.6σ, respectively. The corresponding branching fractions are measured to be B(ψ(3686) → Σ+Σ ̄−ω) = (1.89 pm 0.18 pm 0.21) × 10−5 and B(ψ(3686) → Σ+Σ ̄−φ) = (2.96 pm 0.54 pm 0.41) × 10−6, where the first uncertainties are statistical and the second systematic.File in questo prodotto:
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