Search for Bs0→μ+μ− and B0→μ+μ− decays in CMS

The rare decays Bs0→μ+μ− and B0→μ+μ− are potentially sensitive to physics beyond the Standard Model as their branching fraction can be highly enhanced in new physics models. The CMS experiment at the LHC has already reported the studies of these rare decays in pp collisions at s=7TeV, corresponding to an integrated luminosity of 5fb−1. In both decays, the number of observed events is consistent with the expectation from background plus Standard Model signal prediction. Results of the combination of the exclusion limits for two rare decays in different LHC experiments will also be presented.