6 research outputs found

    Κορώνη -- Μοσχάτον

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    A joint measurement is presented of the branching fractions Bs0μ+μB^0_s\to\mu^+\mu^- and B0μ+μB^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 observation of the Bs0μ+μB^0_s\to\mu^+\mu^- decay, with a statistical significance exceeding six standard deviations, and the best measurement of its branching fraction so far, and three standard deviation evidence for the B0μ+μB^0\to\mu^+\mu^- decay. The measurements are statistically compatible with SM predictions and impose stringent constraints on several theories beyond the SM

    Observation of the rare Bs0oμ+μB^0_so\mu^+\mu^- decay from the combined analysis of CMS and LHCb data

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