Triple electroweak gauge-boson production at Fermilab Tevatron energies

We calculate three-gauge-boson production in the standard model at Fermilab Tevatron energies. At √s=2 TeV in p bar p collisions, the cross sections for triple-gauge-boson production are typically of the order of 10 fb. For the pure leptonic final states from the gauge-boson decays and with some minimal cuts on final state photons, the cross sections for p bar p→W±γγ, Zγγ, and W+W-γ processes are of the order of a few fb, resulitng in a few dozen clean leptonic events for an integrated luminosity of 10 fb-1. The pure leptonic modes from other gauge-boson channels give a significantly smaller rate. Especially, the trilepton modes from W+W-W± and t bar tW±→W+W-W± yield a cross section of the order of 0.1 fb if there is no significant Higgs boson contribution. For a Higgs boson with mH congruent 2MZ, the triple-massive-gauge-boson production rate could be enhanced by a factor of 4--6