Measurement of the Single Top Quark Production Cross Section at CDF

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We report a measurement of the single top quark production cross section in 2.2 ~fb-1 of p-pbar collision data collected by the Collider Detector at Fermilab at sqrt{s}=1.96 TeV.

• Candidate events are classified as signal-like by three parallel analyses which use likelihood, matrix element, and neural network discriminants.
• These results are combined in order to improve the sensitivity.
• We observe a signal consistent with the standard model prediction, but inconsistent with the background-only model by 3.7 standard deviations with a median expected sensitivity of 4.9 standard deviations.