### Search for $B^0_s \to \mu \mu$ and $B^0 \to \mu \mu$ at LHCbSearch for $B^0_s \to \mu \mu$ and $B^0 \to \mu \mu$ at LHCb

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 Author Bettler, Marc-Olivier Source CERN Document Server Content type Text File Format PDF Date Created 2011-06-10 Language English
 Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Modern physics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics Subject Keyword LHCb ♦ Particle Physics - Experiment Abstract A search for the decays $B^0_s \to \mu \mu$ and $B^0 \to \mu \mu$ is performed with about 37 pb$^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed numbers of events are consistent with the background expectations. The resulting upper limits on the branching fractions are B$(B^0_s \to \mu \mu$) < 5.6 \times 10$^{-8}$ and B$(B^0 \to \mu \mu)$ < 1.5 \times 10$^{-8}$ at 95% confidence level. Description Presented at: 46th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 20 - 27 Mar 2011, pp.117-120 Learning Resource Type Article Rights License Preprint: © 2011-2018 CERN (License: CC-BY-3.0)