The electroweak S and T parameters from a fixed point condition
  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. 
M. Fabbrichesi, R. Percacci, A. Tonero and L. Vecchi
hep-ph hep-th