Searches for Single Top Production at CDF

We present recent results from searches for single-top-quark production at CDF in p-pbar collisions at 1.96 TeV. Individual top quarks are expected to be produced in association with bottom quarks mainly through the exchange of an off-mass-shell W boson ($s$-channel), or the W- gluon fusion process ($t$-channel). We select events with one charged lepton, high missing transverse energy and at least 2 jets, one of which is identified as a b-quark using the CDF Silicon detector. It is a challenge to distinguish the single top signal from significant backgrounds from W+jets processes with heavy flavour, eg Wbb, Wcc, Wc. We perform a combined search for the $s$- and $t$- channels, along with individual searches for each channel.