New BaBar Results on Rare Leptonic B Decays

Details New BaBar Results on Rare Leptonic B Decays New BaBar Results on Rare Leptonic B Decays

2002-07-02

arxiv.org/abs/hep-ex/0207010v3

Physics

High Energy Physics

High Energy Physics - Experiment

Latex, 6 pages, 8 figs, two include files *.tex, contribution to FPCP conference replace: added references fixed typos

Scientific paper

New preliminary BaBar results for rare leptonic decays $B^- \to K^-\nu \bar{\nu}$ 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: ${\cal B}(B^-\to K^-\nu \bar{\nu})< 9.4 \times 10^{-5}$ 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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