Search for single-top-quark production in $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}\hspace{0.5em}\mathrm{TeV}$

We search for standard model single-top-quark production in the W-gluon fusion and $W^{\star }$ channels using $106{\mathrm{pb}}^{-1}$ of data from $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}\hspace{0.5em}\mathrm{TeV}$ collected with the Collider Detector at Fermilab. We set an upper limit at $95\%$ confidence level (C.L.) on the combined W-gluon fusion and $W^{\star }$ single-top cross section of 14 pb, roughly six times larger than the standard model prediction. Separate $95\%$ C.L. upper limits in the W-gluon fusion and $W^{\star }$ channels are also determined and are found to be 13 and 18 pb, respectively.