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Angular analysis and branching fraction measurement of the decay B0 to K*0 mu+ mu-

Abstract : The angular distributions and the differential branching fraction of the decay B0 to K*(892)0 mu+ mu- are studied using a data sample corresponding to an integrated luminosity of 5.2 inverse femtobarns collected with the CMS detector at the LHC in pp collisions at sqrt(s) = 7 TeV. 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.
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http://hal.in2p3.fr/in2p3-00854499
Contributor : Dominique Girod <>
Submitted on : Tuesday, August 27, 2013 - 1:56:24 PM
Last modification on : Wednesday, November 25, 2020 - 4:10:43 PM

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S. Chatrchyan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Angular analysis and branching fraction measurement of the decay B0 to K*0 mu+ mu-. Physics Letters B, Elsevier, 2013, 727, pp.77-100. ⟨10.1016/j.physletb.2013.10.017⟩. ⟨in2p3-00854499⟩

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