Dark matter-induced multi-phase dynamical symmetry breaking

We consider the classically scale invariant Higgs-dilaton model of dynamical symmetry breaking extended with an extra scalar field that plays the role of dark matter. The Higgs boson is light near a critical boundary between different symmetry breaking phases, where quantum corrections beyond the usual Gildener-Weinberg approximation become relevant. This implies a tighter connection between dark matter and Higgs phenomenology. The model has only three free parameters, yet it allows for the observed relic abundance of dark matter while respecting all constraints. The direct detection cross section mediated by the Higgs boson is determined by the dark matter mass alone and is testable at future experiments. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

Automated summary

This study considers the classically scale invariant Higgs-dilaton model and extends it with an extra scalar field as dark matter. The Higgs boson is light near a critical boundary, requiring consideration of quantum corrections beyond the usual Gildener-Weinberg approximation. The model has three free parameters and can explain the observed relic abundance of dark matter while satisfying all constraints. The direct detection cross section mediated by the Higgs boson depends only on the dark matter mass and can be tested in future experiments.