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
S. Baffioni
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

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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Cite

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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