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$\pm$3 million BB̄events collected with the BABAR detector at the PEP-II e+e- collider at the SLAC National Accelerator Laboratory. We find no evidence for any of these modes and place 90{\%} confidence level upper limits on their branching fractions in the range (1.5-26)×10-7.
Search for lepton-number violating B + → X -ℓ + ℓ ′ + decays
LANCERI, LIVIO;VITALE, LORENZO;
2014-01-01
Abstract
We report on a search for eleven lepton-number violating processes B+→X-ℓ+ℓ′+ with X-=K-, π-, ρ-, K*-, or D- and ℓ+/ℓ′+=e+ or μ+, using a sample of 471$\pm$3 million BB̄events 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.File in questo prodotto:
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