Study of the decays χ_cJ→ΛΛω

2024/05/22 by BESIII Collaboration, Ablikim, M., Achasov, M. N. +644
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2405.13315

Abstract

Using (27.12± 0.14)×10⁸ ψ(3686) events collected with the BESIII detector, we present the first observation of the decays χ_cJ→ΛΛω, where J=0, 1, 2, with statistical significances of 11.7 σ, 11.2 σ, and 11.8 σ. The branching fractions of these decays are determined to be B(χ_c0→ΛΛω)=(2.37 ± 0.22 ± 0.23) × 10^-4, B(χ_c1→ΛΛω)=(1.01 ± 0.10 ± 0.11) × 10^-4, and B(χ_c2→ΛΛω)=(1.40 ± 0.13 ± 0.17) × 10^-4, where the first uncertainties are statistical and the second are systematic. We observe no clear intermediate structures.

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