Study of Z^{0} decays into lepton pairs and quark pairs

We present a Monte Carlo calculation of the decay $Z^0\to q\overline{q}{l}^{+}{l}^{-}$ for all combinations of quarks and leptons in the three-generation world. We give distributions in lepton energy, dilepton invariant mass squared, and diquark invariant mass squared, as well as the partial rates for each quark-lepton combination. These distributions can be used to distinguish between the above reaction and resonance production in $Z^0$ decays.