Helicity amplitudes for spin-0 or spin-1 boson production ine+e−annihilation

The method of using the helicity-amplitude formalism for spin-0 or spin-1 boson production in ${\mathit{e}}^{+}$ ${\mathit{e}}^{\mathrm{-}}$ annihilation is presented. The method can be used for massive fermions but for high energy, when the fermion masses are small compared to energies involved, it simplifies very much. As an example, the calculation of hard bremsstrahlung processes ${\mathit{e}}^{+}$ ${\mathit{e}}^{\mathrm{-}}$→${\mathit{W}}^{+}$ ${\mathit{W}}^{\mathrm{-}}$γ, ZZγ, Zγγ, and γγγ is presented.