STRONG WW SCATTERING IN UNITARY GAUGE

A method to embed models of strong WW scattering in unitary gauge ampl itudes is presented that eliminates the need for the effective W appro ximation (EWA) in the computation of cross sections at high energy col liders, The cross sections obtained from the U-gauge amplitudes includ e the distributions of the final state fermions in ff --> ffWW, which cannot be obtained from the EWA. Since the U-gauge method preserves th e interference of the signal and the gauge sector background amplitude s, which is neglected in the EWA, it is more accurate, especially if t he latter is comparable to or bigger than the signal, as occurs for in stance at small angles because of Coulomb singularities. The method is illustrated for on-shell W+W+ --> W+W+ scattering and for qq --> qqW( +)W(+).