Heavy-Higgs-boson production and $W^{\mathrm{-}}$$W^{+}$ scattering processes in $e^{\mathrm{-}}$$e^{+}$ collisions at high energy

We employ exact matrix elements for the reactions $e^{\mathrm{-}}$ $e^{+}$→νν¯$W^{\mathrm{-}}$ $W^{+}$ and $e^{\mathrm{-}}$ $e^{+}$→$e^{\mathrm{-}}$ $e^{+}$ $W^{\mathrm{-}}$ $W^{+}$ to explore the observability of a standard-model Higgs boson and of $W^{\mathrm{-}}$ $W^{+}$ scattering processes at a high-energy $e^{\mathrm{-}}$ $e^{+}$ collider. We consider representative $e^{\mathrm{-}}$ $e^{+}$ center-of-mass energies of √s =0.5, 1, and 2 TeV.