Search for lepton-number violating processes in B+ -> h- l+ l+ decays

J. P. Lees 1 V. Poireau 1 V. Tisserand 1 D. Bernard 2 M. Verderi 2 S. Emery 3 G. Hamel de Monchenault 3 G. Vasseur 3 Ch. Yèche 3 N. Arnaud 4 M. Davier 4 D. Derkach 4 G. Grosdidier 4 F. Le Diberder 4 A. M. Lutz 4 B. Malaescu 4 P. Roudeau 4 M. H. Schune 4 A. Stocchi 4 G. Wormser 4
1 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
2 LLR - Laboratoire Leprince-Ringuet
3 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
4 LAL - Laboratoire de l'Accélérateur Linéaire
Abstract : We have searched for the lepton-number violating processes B+ -> h- l+ l+ with h- = K-/pi- and l+ = e+/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 these decays and place 90% confidence level upper limits on their branching fractions Br(B+ -> pi- e+ e+) < 2.3 x 10^{-8}, Br(B+ -> K- e+ e+) < 3.0 x 10^{-8}, Br(B+ -> pi- mu+ mu+) < 10.7 x 10^{-8}, and Br(B+ -> K- mu+ mu+) < 6.7 x 10^{-8}.
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Contributor : Claudine Bombar <>
Submitted on : Friday, March 16, 2012 - 2:57:41 PM
Last modification on : Wednesday, March 27, 2019 - 4:40:25 PM

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J. P. Lees, V. Poireau, V. Tisserand, D. Bernard, M. Verderi, et al.. Search for lepton-number violating processes in B+ -> h- l+ l+ decays. Physical Review D, American Physical Society, 2012, 85, pp.071103. ⟨10.1103/PhysRevD.85.071103⟩. ⟨in2p3-00679867⟩

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