Direct probes of R-parity-violating supersymmetric couplings via single-top-squark production - art. no. 115001

We study the s-channel production of a single top squark in hadron collisio ns through an R-parity-violating mechanism, examining in detail the case in which the squark decays through an R-parity-conserving process into a bott om quark a lepton, and missing energy. We show that the top squark can be d iscovered if its mass is less than 400 GeV, or that the current bound on th e size of the R-parity-violating couplings can be reduced by up to one orde r of magnitude with existing data and by two orders of magnitude at the for thcoming run II of the Fermilab Tevatron.