Screening of heavy-Higgs-boson radiative effects

We study the effects of a heavy Higgs boson on low-energy (1 TeV) observables in the standard model. We prove a screening theorem that, as the Higgs-boson mass becomes large, the leading radiative corrections to any loop order are not measurable, thereby generalizing previous results of explicit calculations of one and two loops. More importantly, the reasons behind such an effect are identified and discussed in detail.