Angular analysis and branching fraction measurement of the decay B0 to K*0 mu+ mu- - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physics Letters B Year : 2013

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

S. Chatrchyan
  • Function : Author
M. Titov
  • Function : Author
Pierre Busson
R. Granier de Cassagnac
C. Mironov
P. Paganini
J.-L. Agram
C. Collard
E. Conte
P. van Hove
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier

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.

Dates and versions

in2p3-00854499 , version 1 (27-08-2013)

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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, 2013, 727, pp.77-100. ⟨10.1016/j.physletb.2013.10.017⟩. ⟨in2p3-00854499⟩
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