Observation of the decays χcJ → $$ {\mathrm{nK}}_{\mathrm{S}}^0\overline{\Lambda} $$ + c.c

Journal article

By analyzing 4.48 × 108ψ(3686) events collected with the BESIII detector, we observe the decays χcJ → nKS0Λ¯ + c.c. (J = 0, 1, 2) for the first time, via the radiative transition ψ(3686) → γχcJ. The branching fractions are determined to be (6.65 ± 0.26stat ± 0.41syst) × 10−4, (1.66 ± 0.12stat ± 0.12syst) × 10−4, and (3.58 ± 0.16stat ± 0.23syst) × 10−4 for J = 0, 1, and 2, respectively. [Figure not available: see fulltext.]

Authors: Ablikim, M; Achasov, MN; Adlarson, P; Ahmed, S; Albrecht, M

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2021
• Issue: 11
• Pages: 217
• Publication date: 2021-11-01
• DOI: 10.1007/jhep11(2021)217
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: Electron–positron annihilation; Branching fraction; Bar (unit)