Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data
Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data
A joint measurement is presented of the branching fractions $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first …