%0 Journal Article
%T Oblique S and T constraints on electroweak strongly-coupled models with a light Higgs
%A Pich, A.
%A Rosell, I.
%A Sanz-Cillero, J. J.
%J Journal of High Energy Physics
%D 2014
%V 01
%N 1
%I Springer
%@ 1029-8479
%G English
%F Pich_etal2014
%O WOS:000346240600006
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2059), last updated on Wed, 11 Feb 2015 13:35:25 +0000
%X Using a general effective Lagrangian implementing the chiral symmetry breaking SU(2)(L) circle times SU(2)(R) -> SU(2)(L+R), we present a one-loop calculation of the oblique S and T parameters within electroweak strongly-coupled models with a light scalar. Imposing a proper ultraviolet behaviour, we determine S and T at next-to-leading order in terms of a few resonance parameters. The constraints from the global fit to electroweak precision data force the massive vector and axial-vector states to be heavy, with masses above the TeV scale, and suggest that the W+W- and and ZZ couplings of the Higgs-like scalar should be close to the Standard Model value. Our findings are generic, since they only rely on soft requirements on the short-distance properties of the underlying strongly-coupled theory, which are widely satisfied in more specific scenarios.
%K Higgs Physics
%K Beyond Standard Model
%K Chiral Lagrangians
%K Technicolor and Composite Models
%R 10.1007/JHEP01(2014)157
%U http://arxiv.org/abs/1310.3121
%U https://doi.org/10.1007/JHEP01(2014)157
%P 157-35pp