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arXiv · 1102.2113

The electroweak S and T parameters from a fixed point condition

M. Fabbrichesi·R. Percacci·A. Tonero·L. Vecchi
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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.

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M. Fabbrichesi, R. Percacci, A. Tonero, L. Vecchi. 2011-02-10. The electroweak S and T parameters from a fixed point condition. https://doi.org/10.1103/physrevlett.107.021803

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