  The search for the electroweak production of top quarks is entering an
exciting time: with the ever increasing luminosity furnished by the Tevatron
ppbar Collider at Fermilab and sophisticated analysis techniques we are now
able to approach the expected standard model production cross section for this
new mode of production. Using 370pb-1 of D0 data and likelihoods as
discriminants to extract the signal from the large backgrounds, we set upper
limits on the standard model production cross section in the s-channel of 5.0
pb and in the t-channel of 4.4 pb, at 95% confidence level.
