The minimal linear sigma model for the Goldstone Higgs
High Energy Physics - Phenomenology
2016-06-29 v1
Abstract
In the context of the minimal SO(5) linear {\sigma}-model, a complete renormalizable Lagrangian -including gauge bosons and fermions- is considered, with the symmetry softly broken to SO(4). The scalar sector describes both the electroweak Higgs doublet and the singlet {\sigma}. Varying the {\sigma} mass would allow to sweep from the regime of perturbative ultraviolet completion to the non-linear one assumed in models in which the Higgs particle is a low-energy remnant of some strong dynamics. We analyze the phenomenological implications and constraints from precision observables and LHC data. Furthermore, we derive the d <= 6 effective Lagrangian in the limit of heavy exotic fermions.
Keywords
Cite
@article{arxiv.1603.05668,
title = {The minimal linear sigma model for the Goldstone Higgs},
author = {Ferruccio Feruglio and Belen Gavela and Kirill Kanshin and Pedro Accioly Nogueira Machado and Stefano Rigolin and Sara Saa},
journal= {arXiv preprint arXiv:1603.05668},
year = {2016}
}