Search for the semi-muonic charmonium decay J/ψ → D − μ + ν μ + c. c

Journal article

Using (10087 ± 44) × 106J/ψ events collected with the BESIII detector at the BEPCII e+e− storage ring at the center-of-mass energy of s = 3.097 GeV, we present a search for the rare semi-muonic charmonium decay J/ψ → D−μ+νμ + c.c.. Since no significant signal is observed, we set an upper limit of the branching fraction to be B (J/ψ → D−μ+νμ + c.c.) < 5.6 × 10−7 at 90% confidence level. This is the first search for the weak decay of charmonium with a muon in the final state.

Authors: Ablikim, M; Achasov, MN; Adlarson, P; Ai, XC; Aliberti, R

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2024
• Issue: 1
• Article number: 126
• Publication date: 2024-01-23
• Acceptance date: 2024-01-02
• DOI: 10.1007/jhep01(2024)126
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: Quarkonium; Rare Decay; Branching fraction; e+-e− Experiments