Search for the weak decay $ψ(3686) \to Λ_c^{+} \barΣ^- +c.c$
Creators: name: BESIII Collaboration
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name: Achasov, M. N.
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Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Using $(448.1 \pm 2.9) \times 10^{6}$ $ψ(3686)$ events collected with the BESIII detector, we perform the first search for the weak baryonic decay $ψ(3686) \to Λ_c^{+} \barΣ^- +c.c.$. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction ($\mathcal B$) of $ψ(3686) \to Λ_c^{+} \barΣ^- +c.c.$ is set to be $1.4\times 10^{-5}$ at the 90\% confidence level.
description: 9 pages, 4 figures