Angular analysis and branching fraction measurement of the decay B-0 -> K*(0)mu(+)mu(-)

Autor: Chatrchyan, S, Khachatryan, V, Sirunyan, A, Tumasyan, A, Adam, W, Bergauer, T, Dragicevic, M, Eroe, J, Fabjan, C, Friedl, M, Fruehwirth, R, Ghete, V, Hoermann, N, Hrubec, J, Jeitler, M, Kiesenhofer, W, Kueinz, V, Krammer, M, Kraetschmer, I, Liko, D, Mikulec, I, Rabady, D, Rahbaran, B, Rohringer, C, Rohringer, H
Rok vydání: 2016
Popis: The angular distributions and the differential branching fraction of the decay B0→K*(892)0μ+μ- are studied using a data sample corresponding to an integrated luminosity of 5.2fb-1 collected with the CMS detector at the LHC in pp collisions at s=7TeV. From more than 400 signal decays, the forward-backward asymmetry of the muons, the K*(892)0 longitudinal polarization fraction, and the differential branching fraction are determined as a function of the square of the dimuon invariant mass. The measurements are in good agreement with standard model predictions. © 2013 CERN.
Databáze: OpenAIRE