We report on a search for eleven lepton-number violating processes B+→X-ℓ+ℓ′+ with X-=K-, π-, ρ-, K*-, or D- and ℓ+/ℓ′+=e+ or μ+, using a sample of 471±3 million BB̄ 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)×10-7.
Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2014). Search for lepton-number violating B+ -> X(-)l(+)l '(+) decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 89(1) [10.1103/PhysRevD.89.011102].
Search for lepton-number violating B+ -> X(-)l(+)l '(+) decays
Martinelli M.;CARPINELLI, MassimoMembro del Collaboration Group
;
2014
Abstract
We report on a search for eleven lepton-number violating processes B+→X-ℓ+ℓ′+ with X-=K-, π-, ρ-, K*-, or D- and ℓ+/ℓ′+=e+ or μ+, using a sample of 471±3 million BB̄ 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)×10-7.
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