HIGGS RESONANCE IN VECTOR BOSON SCATTERING - ART. NO. 053004

A heavy Higgs resonance in the minimal standard model is described in such a way that the whole energy range of 2-->2 scattering processes i s covered, including the asymptotic behavior at low and high energies. The description does not rely on a particular representation (linear or nonlinear) chosen for the Higgs and Goldstone fields. The low-energ y theorems which follow from the custodial SU2 symmetry of the Higgs s ector restrict the possible parametrizations of the line shape that ar e consistent in perturbation theory. Matching conditions are specified which are necessary and sufficient to relate the parameters arising i n different expansions. The construction is performed explicitly up to next-to-leading order. [S0556-2821(98)06415-7].