Abstract
The first observation of the associated production of a single top quark and a boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of of proton-proton collisions at recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is , in agreement with the standard model prediction.
- Received 13 January 2014
DOI:https://doi.org/10.1103/PhysRevLett.112.231802
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© 2014 CERN, for the CMS Collaboration
Viewpoint
Top Quarks Go Solo in Rare Events
Published 9 June 2014
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