  Single top production processes at hadron colliders provide information on
the relation between the top quark and the electroweak sector of the standard
model. We compute the next-to-leading order QCD corrections to the three main
production channels: $t$-channel, $s$-channel and $tW$ associated production,
in the standard model including operators up to dimension-six. The calculation
can be matched to parton shower programs and can therefore be directly used in
experimental analyses. The QCD corrections are found to significantly impact
the extraction of the current limits on the operators, because both of an
improved accuracy and a better precision of the theoretical predictions. In
addition, the distributions of some of the key discriminating observables are
modified in a nontrivial way, which could change the interpretation of
measurements in terms of UV complete models.
