The triviality of the scalar sector of the standard one-doublet Higgs model implies that it is only an effective low-energy theory valid below some cut-off scale Λ. In this note we show that the experimental constraint on the amount of custodial symmetry violation, |∆ρ∗| = α|T | ≤ 0.4%, implies that the scale Λ must be greater than of order 7.5 TeV. For… (More)