Search for B0s → μ+μ− and B0 → μ+μ− decays
作者： H Kirschenmann , G Steinbrück , M Zeise , O Gutsche , S Chatrchyan
关键词: Large Hadron Collider 、 Physics 、 Particle physics
摘要: A search for the rare decays B0s → μ + − and B0 is performed in pp collisions at s√=7TeV , with a data sample corresponding to an integrated luminosity of 5 fb−1 collected by CMS experiment LHC. In both decays, number events observed after all selection requirements consistent expectation from background plus standard model signal predictions. The resulting upper limits on branching fractions are B(B0s→μ+μ−)<7.7×10−9 B(B0→μ+μ−)<1.8×10−9 95% confidence level.
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