Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8189565 | Physics Letters B | 2013 | 21 Pages |
Abstract
The results of a search for flavor changing neutral currents in top quark decays tâZq in events with a topology compatible with the decay chain tt¯âWb+Zqââνb+ââq are presented. The search is performed with a data sample corresponding to an integrated luminosity of 5.0 fbâ1 of proton-proton collisions at a center-of-mass energy of 7 TeV, collected with the CMS detector at the LHC. The observed number of events agrees with the standard model prediction and no evidence for flavor changing neutral currents in top quark decays is found. A tâZq branching fraction greater than 0.21% is excluded at the 95% confidence level.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
CMS Collaboration CMS Collaboration, S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl, R. Frühwirth, V.M. Ghete, J. Hammer, N. Hörmann, J. Hrubec, M. Jeitler,