The μτ and eτ decays of top quark pairs produced in pp¯ collisions at √s=1.8TeV

We present a search for dilepton events from tt¯ production with one electron or muon and one hadronically decaying τ lepton from the decay tt¯→(lν l )(τν τ )bbu, (l=e,μ), using the Collider Detectorat Fermilab. In a 109pb −1 data sample of pp¯ collisions at √S=1.8TeV we expect ∼1 signal event and a total background of ∼2 events; we observe 4 candidate events (2eτ and 2μτ). Three of these events have jets identified as b candidates, compared to an estimated background of 0.28±0.02 events. © 1997 The American Physical Society.