4-HEAVY-QUARK HADROPRODUCTION

We present new formulas for the numerical calculation of QCD production of two pairs of heavy quarks in hadron collisions, in leading order. We give results for bbbbBARBAR, bbccBARBAR, and ccccBARBAR production at the Fermilab Tevatron; the cross sections exceed 100 pb with all heavy quarks having p(T) > 10 GeV. We also present results for ttttBARBAR production in pp collisions for supercollider energies and briefly discuss the physics consequences for multi-W production via standard t --> bW decays. For m(t) = 110-140 GeV we predict of order 10-30 four-W events per year at the Superconducting Super Collider from this source, with all four weak bosons decaying to e-nu-e or mu-nu-mu. Similar results are obtained for the CERN Large Hadron Collider, assuming ten times higher luminosity.