TY - JOUR
T1 - Search for the semi-muonic charmonium decay J/ψ → D − μ +νμ + c.c.
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Kalantar-Nayestanaki, N.
AU - Kappert, R.
AU - Kavatsyuk, M.
AU - Messchendorp, J.
AU - Rodin, V.
PY - 2024/1
Y1 - 2024/1
N2 - Using (10087 ± 44) × 106 J/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. [Figure not available: see fulltext.]. © 2024, The Author(s).
AB - Using (10087 ± 44) × 106 J/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. [Figure not available: see fulltext.]. © 2024, The Author(s).
U2 - 10.1007/JHEP01(2024)126
DO - 10.1007/JHEP01(2024)126
M3 - Article
SN - 1126-6708
VL - 2024
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 1
M1 - 126
ER -