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Observation of Ψ (3686)→K^-Λ (1520)Ξ^+ + C.c.

M. Ablikim,M. N. Achasov J. H. Zou,J. Zu

Journal of High Energy Physics(2025)

Institute of High Energy Physics

Cited 0|Views7
Abstract
Based on (2712.4 ± 14.3) × 106 ψ(3686) events collected at the BESIII detector operating at the BEPCII collider, we present the first observation of the decay ψ (3686)→K^-Λ (1520)Ξ^+ + c.c.. The product branching fraction ℬ[ψ (3686)→K^-Λ (1520)Ξ^++c.c.]×ℬ[Λ (1520)→ pK^-] is measured to be (9.47 ± 0.75 ± 0.97) × 10−7, where the first uncertainty is statistical and the second systematic.
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Key words
Branching fraction,e +-e Experiments,Quarkonium,QCD
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