TY - JOUR
T1 - Study of the decays χcJ → Λ Λ ¯ ω
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M.N.
AU - Adlarson, P.
AU - Afedulidis, O.
AU - Ai, X. C.
AU - Aliberti, R.
AU - Amoroso, A.
AU - Kalantar-Nayestanaki, Nasser
AU - Kavatsyuk, Myroslav
AU - Messchendorp, Johan
PY - 2024/8/1
Y1 - 2024/8/1
N2 - Using (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector, we present the first observation of the decays χcJ→ΛΛ¯ω, where J=0, 1, 2, with statistical significances of 11.7σ, 11.2σ, and 11.8σ. The branching fractions of these decays are determined to be B(χc0→ΛΛ¯ω)=(2.37±0.22±0.25)×10-4, B(χc1→ΛΛ¯ω)=(1.01±0.10±0.11)×10-4, and B(χc2→ΛΛ¯ω)=(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.
AB - Using (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector, we present the first observation of the decays χcJ→ΛΛ¯ω, where J=0, 1, 2, with statistical significances of 11.7σ, 11.2σ, and 11.8σ. The branching fractions of these decays are determined to be B(χc0→ΛΛ¯ω)=(2.37±0.22±0.25)×10-4, B(χc1→ΛΛ¯ω)=(1.01±0.10±0.11)×10-4, and B(χc2→ΛΛ¯ω)=(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.
U2 - 10.1103/PhysRevD.110.032022
DO - 10.1103/PhysRevD.110.032022
M3 - Article
SN - 1550-7998
VL - 110
JO - Physical Review D
JF - Physical Review D
IS - 3
M1 - 032022
ER -