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

Using (10087 ± 44) × 10^6 J / ψ events collected with the BESIII detector at the BEPCII e ^+ e ^ − storage ring at the center-of-mass energy of s $$ \sqrt{s} $$ = 3.097 GeV, we present a search for the rare semi-muonic charmonium decay J / ψ → D ^− μ ^+ ν _ μ + c.c.. Since no significant signal is observed, we set an upper limit of the branching fraction to be B $$ \mathcal{B} $$ ( J / ψ → D ^− μ ^+ ν _ μ + 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.

• Publication year

  2023

• Venue

  Journal of High Energy Physics

• Publication date

  2023-07-05

• Fields of study

  Physics

• Identifiers
  DOI 10.1007/JHEP01(2024)126arXiv 2307.02165
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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