title: Electroweak S and T parameters from a fixed point condition.
abstract: We consider the standard model without the Higgs boson, where the Goldstone modes are described by a nonlinear sigma model. We study the renormalization group flow of the sigma model coupling f and of the electroweak parameters S and T. The condition that the couplings reach a fixed point at high energy leaves the low energy values of f and T arbitrary (to be determined experimentally) and fixes S to a value compatible with electroweak precision data.
authors.affiliation: INFN, Sezione di Trieste, Trieste, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Fabbrichesi
authors.forename: R
authors.initials: R
authors.lastname: Percacci
authors.forename: A
authors.initials: A
authors.lastname: Tonero
authors.forename: L
authors.initials: L
authors.lastname: Vecchi