Search for the semi-muonic charmonium decay $J/\psi\to D^{-}\mu^{+}\nu_{\mu}+c.c.$ - INSPIRE

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Search for the semi-muonic charmonium decay $J/\psi\to D^{-}\mu^{+}\nu_{\mu}+c.c.$

BESIII

Collaboration

Jul 5, 2023

20 pages

Published in:

JHEP 01 (2024) 126

Published: Jan 23, 2024

e-Print:

2307.02165 [hep-ex]

DOI:

10.1007/JHEP01(2024)126

Experiments:

BEPC-BES-III

View in:

ADS Abstract Service

reference search12 citations

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Abstract: (Springer)

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

\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

\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.[graphic not available: see fulltext]

Note:

19 pages, 5 figures

Branching fraction
e+-e− Experiments
Quarkonium
Rare Decay
electron positron: annihilation
electron positron: colliding beams
J/psi(3100): electroproduction
charmonium: rare decay
J/psi(3100): rare decay
J/psi(3100): semileptonic decay

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