WWZ,ZZZ, andWWγproduction ate+e−colliders

We discuss the prospects for the detection of WWZ, ZZZ, and WWγ events at a future $e^{+}$ $e^{\mathrm{-}}$ supercollider with c.m. energy 0.35–2.0 TeV. These modes provide tests of triple and quartic gauge-boson couplings. WWZ and ZZZ modes also provide tests of a neutral Higgs boson H if its mass is in the range 200–600 GeV; there are especially large enhancements in the ZZZ channel. For an annual integrated luminosity of 10 ${\mathrm{fb}}^{\mathrm{-}1}$ at optimal incident energies about a thousand events would be produced per annum in each of the WWZ and WWγ channels, plus about ten ZZZ events in the absence of Higgs-boson enhancements. Of order 20% of the WWZ and ZZZ final states and 30% of the WWγ final states are in principle fully reconstructible. We present dynamical distributions with and without H effects.