We have searched for the lepton-number violating processes B+→h-ℓ+ℓ+ with h-=K-/π- and ℓ+=e+/μ+, using a sample of 471±3 million BB̅ 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 B(B+→π-e+e+)<2.3×10-8, B(B+→K-e+e+)<3.0×10-8, B(B+→π-μ+μ+)<10.7×10-8, and B(B+→K-μ+μ+)<6.7×10-8.
Search for lepton-number violating processes in B^{+}→h^{-}l^{+}l^{+} decays
LO VETERE, MAURIZIO;MONGE, MARIA ROBERTA;
2012-01-01
Abstract
We have searched for the lepton-number violating processes B+→h-ℓ+ℓ+ with h-=K-/π- and ℓ+=e+/μ+, using a sample of 471±3 million BB̅ 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 B(B+→π-e+e+)<2.3×10-8, B(B+→K-e+e+)<3.0×10-8, B(B+→π-μ+μ+)<10.7×10-8, and B(B+→K-μ+μ+)<6.7×10-8.
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