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Search for lepton-number violating B+ -> X- l+ l'+ decays

Abstract : We report on a search for eleven lepton-number violating processes B+ -> X- l+ l'+ with X- = K-, pi-, rho-, K*- or D- and l+/l'+ = e+ or mu+, using a sample of 471+/-3 million BBbar events collected with the BaBar detector at the PEP-II e+e- collider at the SLAC National Accelerator Laboratory. We find no evidence for any of these modes and place 90% confidence level upper limits on their branching fractions in the range $(1.5-26)\times 10^{-7}$.
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http://hal.in2p3.fr/in2p3-00879016
Contributor : Sabine Starita <>
Submitted on : Thursday, October 31, 2013 - 3:10:03 PM
Last modification on : Wednesday, September 16, 2020 - 4:25:18 PM

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J. P. Lees, V. Poireau, V. Tisserand, N. Arnaud, M. Davier, et al.. Search for lepton-number violating B+ -> X- l+ l'+ decays. Physical Review D, American Physical Society, 2014, 89, pp.011102. ⟨10.1103/PhysRevD.89.011102⟩. ⟨in2p3-00879016⟩

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