Details

Autor(en) / Beteiligte

• Fabbrichesi, M
• Percacci, R
• Tonero, A
• Vecchi, L

Titel

Electroweak S and T parameters from a fixed point condition

Ist Teil von

• Physical review letters, 2011-07, Vol.107 (2), p.021803-021803, Article 021803

Ort / Verlag

United States

Erscheinungsjahr

2011

Quelle

American Physical Society

Beschreibungen/Notizen

• 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.