Mr Alberto Tonero (SISSA)
In absence of a fundamental Higgs boson, the dynamics of the SU(2)xU(1) symmetry breaking can be described by coupling gauge bosons and fermions to a nonlinear sigma model. Normally this is regarded only as an approximate description valid up to some cutoff energy scale. However, if there is a UV fixed point, this model in which the Nambu-Goldstone bosons can be thought of as fundamental degrees of freedom could hold up to higher energies, becoming asymptotically safe. The RG analysis of the electroweak nonlinear sigma model, the predictions about the contributions to the oblique S and T parameters and the computation of the scattering amplitude within the asymptotic safety scenario will be presented. Inclusion of fermions will also be discussed.