Non-linear Higgs portal to Dark Matter

TL;DR

This paper explores a non-linear Higgs portal model for scalar Dark Matter, highlighting differences in relic abundance, detection methods, and collider signals compared to the standard linear scenario.

Contribution

It introduces a non-linear realization of electroweak symmetry breaking in the Higgs portal framework, providing new insights into Dark Matter interactions and phenomenology.

Findings

Altered Dark Matter relic abundance predictions

Distinct signals in direct and indirect detection experiments

Unique collider signatures of the non-linear Higgs portal

Abstract

The Higgs portal to scalar Dark Matter is considered in the context of non-linearly realised electroweak symmetry breaking. We determine the interactions of gauge bosons and the physical Higgs particle $h$ to a scalar singlet Dark Matter candidate $S$ in an effective description. The main phenomenological differences with respect to the standard scenario can be seen in the Dark Matter relic abundance, in direct/indirect searches and in signals at colliders.