An angular analysis and a measurement of the differential branching fraction of the decay Bs → ϕμ+μ− are presented, using data corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions recorded by the LHCb experiment at √s = 7 and 8 TeV. Measurements are reported as a function of q2, the square of the dimuon invariant mass and results of the angular analysis are found to be consistent with the Standard Model. In the range 1 < q2< 6 GeV2/c4, where precise theoretical calculations are available, the differential branching fraction is found to be more than 3σ below the Standard Model predictions.
|Titolo:||Angular analysis and differential branching fraction of the decay B-s(0) -> phi mu(+)mu(-)|
|Data di pubblicazione:||2015|
|Tipologia:||1.1 Articolo in rivista|