Strongly Coupled Models with a Higgs-like Boson
Abstract
Considering the one-loop calculation of the oblique S and T parameters, we have presented a study of the viability of strongly-coupled scenarios of electroweak symmetry breaking with a light Higgs-like boson. The calculation has been done by using an effective Lagrangian, being short-distance constraints and dispersive relations the main ingredients of the estimation. Contrary to a widely spread believe, we have demonstrated that strongly coupled electroweak models with massive resonances are not in conflict with experimental constraints on these parameters and the recently observed Higgs-like resonance. So there is room for these models, but they are stringently constrained. The vector and axial-vector states should be heavy enough (with masses above the TeV scale), the mass splitting between them is highly preferred to be small and the Higgs-like scalar should have a WW coupling close to the Standard Model one. It is important to stress that these conclusions do not depend critically on the inclusion of the second Weinberg sum rule.
Cite
@article{arxiv.1307.1958,
title = {Strongly Coupled Models with a Higgs-like Boson},
author = {Antonio Pich and Ignasi Rosell and Juan Jose Sanz-Cillero},
journal= {arXiv preprint arXiv:1307.1958},
year = {2015}
}
Comments
5 pages, 2 figures. Talk given at LHCP 2013, the Large Hadron Collider Physics Conference, May 13-18th (2013), Barcelona (Spain)