TY - JOUR

T1 - Study of the decays χcJ→ΛΛ¯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 - An, Q.

AU - Bai, Y.

AU - Bakina, O.

AU - Balossino, I.

AU - Ban, Y.

AU - Bao, H.-R.

AU - Batozskaya, V.

AU - Begzsuren, K.

AU - Berger, N.

AU - Berlowski, M.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bianco, E.

AU - Bortone, A.

AU - Briere, R. a.

AU - Brueggemann, A.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/8/27

Y1 - 2024/8/27

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.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85206977738&origin=inward&txGid=a22bc371dd3bcb723306e9c93fa8a546

U2 - 10.1103/PhysRevD.110.032022

DO - 10.1103/PhysRevD.110.032022

M3 - Article

VL - 110

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 3

M1 - 032022

ER -