Search for Lepton-number-violating B+->D-l+l'+ Decays

Details Search for Lepton-number-violating B+->D-l+l'+ Decays Search for Lepton-number-violating B+->D-l+l'+ Decays

2011-07-04

arxiv.org/abs/1107.0642v1

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 figures

Scientific paper

We perform the first search for lepton-number-violating B+->D-l+l'+ decays, where l and l' stand for e or mu, using 772 x 10^6 BB-bar pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB e^+e^- collider. No evidence for these decays has been found. Assuming uniform three-body phase space distributions for the D-l+l+ decays, we set the following upper limits on the branching fractions at 90% confidence level: Br(B+ -> D-e+e+) < 2.6x10^-6, Br(B+ -> D-e+mu+) < 1.8x10^-6 and Br(B+ -> D-mu+mu+) < 1.0x10^-6.

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