Search for flavor-changing neutral current and lepton flavor violating decays of D0+D^0 \to \ell^+ \ell^-

Collaboration
Aug, 2004
7 pages
Published in:
  • Phys.Rev.Lett. 93 (2004) 191801
e-Print:
Report number:
  • SLAC-PUB-10594,
  • BABAR-PUB-04-027
Experiments:

Citations per year

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Abstract:
We report on a search for the flavor-changing neutral current decays \Dz\to e^+e^- and \Dz\to\mu^+\mu^-, and the lepton-flavor violating decay \Dz\to e^\pm\mu^\mp. The measurement is based on 122fb1122 {fb}^{-1} of data collected by the \babar detector at the PEP-II asymmetric e+ee^+e^- collider. No evidence is found for any of the decays. The upper limits on the branching fractions, at the 90 % confidence level, are 1.2×1061.2\times 10^{-6} for \Dz\to e^+e^-, 1.3×1061.3\times 10^{-6} for \Dz\to\mu^+\mu^-, and 8.1×1078.1\times 10^{-7} for \Dz\to e^\pm\mu^\mp.
  • 11.30.Hv
  • 12.60.-i
  • 13.20.Fc
  • 12.15.Mm
  • D mesons
  • meson leptonic decay
  • discrete symmetries
  • neutral currents
  • electron positron: colliding beams
  • electron positron: annihilation