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 - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/1/1

Y1 - 2024/1/1

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.].

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.].

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85182985003&origin=inward&txGid=4de8a2cc8306ed1056af41e1f5c8619e

U2 - 10.1007/JHEP01(2024)126

DO - 10.1007/JHEP01(2024)126

M3 - Article

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 1

M1 - 126

ER -