Candidate di-muon event from the CMS experiment in the B<sub>s</sub> meson mass window. The pair of muons are drawn as red lines extending from the particle collision.
Search for rare decay of neutral B mesons to two muons
At a CERN seminar today, CMS presented results for the search for new physics in the decay of Bs and B0 mesons to two muons, taking into account all of the 4.9 fb−1 of data collected in 2011. The results — upper limits of 7.7 x 10−9 (Bs) and 1.8 x…
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Di-muon invariant mass distributions in the barrel (left) and endcap (right) cha
Search for Bs –> mu+mu– and B0 –> mu+mu– decays in pp collisions at 7 TeV
Read the paper: BPH-11-002 The observed numbers of events in both decay modes are consistent with those expected in the Standard Model. Upper limits on the branching fraction have been determined at 90% and 95% confidence levels (CL). The Standard…
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