2014/09/01 by Ligabue, Franco
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.1409.0445
The search for the rare \BMuMu and \BsMuMu decays in pp collisions at √ s = 7~GeV and √ s = 8~GeV, collected at the LHC in 2011 and 2012, is briefly reviewed. The data analyzed by CMS correspond to a total integrated luminosity of 5 and 20 \rm fb-1, respectively. The time-integrated average branching fraction has been measured to be (3.0 +1.0-0.9)× 10-9 in accordance with the Standard Model predictions, while an upper limit < 1.1× 10-9) has been placed on the other investigated decay at 95% CL. A preliminary combination with the results from LHCb is also presented for both channels, and prospects for the future are briefly discussed.