The 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.

4 pages, 2 figures

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• Asymptotic safety of simple Yukawa systems
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Cited by in corpus (10)

• The nonperturbative functional renormalization group and its applications
• RG flow of Weyl-invariant dilaton gravity
• Computing the Effective Action with the Functional Renormalization Group
• Splitting Ward identity
• Fermions and Goldstone bosons in an asymptotically safe model
• Functional renormalization group of the non-linear sigma model and the O(N) universality class
• On classicalization in nonlinear sigma models
• In search of a UV completion of the Standard Model - 378.000 models that don't work
• Functional renormalization of N scalars with O(N) invariance
• One-loop functional RG flow of scalar theory with electroweak symmetry