2022
DOI: 10.48550/arxiv.2207.10877
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Search for the weak decay $ψ(3686) \to Λ_c^{+} \barΣ^- +c.c$

Abstract: Using (448.1 ± 2.9) × 10 6 ψ(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay ψ(3686) → Λ + c Σ− + c.c.. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of ψ(3686) → Λ + c Σ− + c.c. is set to be 1.4 × 10 −5 at the 90% confidence level.

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