Heavy leptons at hadron supercolliders

The production, decay, and detection of a fourth-generation charged heavy lepton L at multi-TeV hadron supercolliders is discussed for masses $m_L$>$M_W$ and $m_{{\nu }_L\approxeq }$0. The leptonic and hadronic decay signals for single L production and LL¯ pair production are evaluated. In all channels examined the heavy-lepton signal is smaller than backgrounds from single and pair production of $W^{\pm }$ and Z bosons. However, it may still be possible to detect a heavy lepton from its contribution to p${?}_T$+2 or 4 jets events where the Z(→νν¯)+jets background may be determined from measurements of (Z→ll¯)+jets events.