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The electroweak S and T parameters from a fixed point condition · Around

2011

The electroweak S and T parameters from a fixed point condition

Fabbrichesi, M., Percacci, R., Tonero, A. et al.

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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.

Built on

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2010
Later among the works it cites.
M. Fabbrichesi, R. Percacci, A. Tonero and O. Zanusso, Phys. Rev. D83
2011
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