Abstract
We have computed the complete one-loop electroweak effects in the minimal supersymmetric standard model for single top (and single antitop) production in the $t$ channel at hadron colliders, generalizing a previous analysis performed for the dominant $dt$ final state and fully including QED effects. The results are quite similar for all processes. The overall standard model one-loop effect is small, of the few percent size. This is due to a compensation of weak and QED contributions that are of opposite sign. The genuine supersymmetry contribution is generally quite modest in the minimal supergravity scenario. The experimental observables would therefore only practically depend, in this framework, on the Cabibbo-Kobayashi-Maskawa $Wtb$ coupling.
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