Search for rare b-meson decays at CDF

Details Search for rare b-meson decays at CDF Search for rare b-meson decays at CDF

2007-10-12

arxiv.org/abs/0710.2502v1

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 6 eps figures

Scientific paper

We report on the search for $B^0_s\to\mu^+\mu^-$, $B^0_d\to\mu^+\mu^-$ decays and $b\to s \mu^+\mu^-$ transitions in exclusive decays of B mesons using the CDF II detector at the Fermilab Tevatron Collider. Using 2 fb$^{-1}$ of Run II data we find upper limits on the branching fractions $\mathcal{B}(B^0_s\to\mu^+\mu^-)<5.8\times 10^{-8}$ and $\mathcal{B}(B^0_d\to\mu^+\mu^-)<1.8\times 10^{-8}$ at 95% confidence level. The results for the branching fractions of the $b\to s \mu^+\mu^-$ transitions using 924 pb$^{-1}$ of Run II data are $\mathcal{B}(B^+\to\mu^+\mu^-K^+)=(0.60\pm0.15\pm0.04)\times 10^{-6}$, $\mathcal{B}(B^0_d\to\mu^+\mu^-K^{*0})=(0.82\pm0.31\pm0.10)\times 10^{-6}$ and $\mathcal{B}(B^0_s\to \mu^+\mu^-\phi)/\mathcal{B}(B^0_s\to J/\psi\phi) < 2.61\times 10^{-3}$ at 95% confidence level.

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