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New BaBar Results on Rare Leptonic B Decays

Valerie Halyo
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Abstract

New preliminary BaBar results for rare leptonic decays $B^- \to K^-ν\barν$ and $B^0\to \ell^+\ell^-$ are reported. Using data collected at the $\FourS$ with the BaBar detector, no evidence for a signal was found yielding the corresponding upper limits at the 90% confidence level: ${\cal B}(B^-\to K^-ν\barν)< 9.4 \times 10^{-5}$ for $50.7 \invfb $, ${\cal B}(\bee)< \eeul$, ${\cal B}(\bmm) < \mmul$ and ${\cal B}(\bem) < \emul$ using $54.4 \invfb $.

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Valerie Halyo. 2002-07-03. New BaBar Results on Rare Leptonic B Decays. https://arxiv.org/abs/hep-ex/0207010

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