Measurements of single top-quark production in pp collisions by the CMS   experiment
  A summary of studies of electroweak top-quark production performed by the CMS collaboration is presented. The results include measurements of production cross sections, extraction of the value of $|V_{tb}|$, determination of W-boson helicity in top-quark decays and top-quark spin asymmetry, and a search for anomalous couplings in the Wtb vertex. No deviations from predictions of the standard model are found. 
Andrey Popov (for the CMS Collaboration)
hep-ex