Measurement of the {ital t}{bar {ital t}} Production Cross Section in {ital p}{bar {ital p}} Collisions at {radical}({ital s}) =1.8 TeV

We present a measurement of the t{bar t} production cross section in p{bar p} collisions at {radical}(s)=1.8 TeV using an integrated luminosity of 109 pb{sup {minus}1} collected with the Collider Detector at Fermilab. The measurement uses t{bar t} decays into final states which contain one or two high transverse momentum leptons and multiple jets, and final states which contain only jets. Using acceptances appropriate for a top quark mass of 175 GeV/c{sup 2} , we find {sigma}{sub t{bar t}}=7.6{sup +1 .8}{sub {minus}1.5} pb . {copyright} {ital 1998} {ital The American Physical Society}