Novel two component dark matter features in the $Z_2 \times Z_2$ 3HDM

TL;DR

This paper explores a three Higgs doublet model with two inert scalars, revealing new parameter space regions where two dark matter particles contribute equally to relic density, under various constraints.

Contribution

It introduces a novel $Z_2 imes Z_2$ 3HDM framework with two dark matter candidates and analyzes its phenomenology and constraints.

Findings

Unexplored regions of parameter space identified.

Regions where two DM particles contribute equally to relic density.

Model consistent with current experimental constraints.

Abstract

We discuss the constraints and phenomenology of the $Z_2 \times Z_2$ three Higgs doublet model (3HDM) with two inert scalars, originating two dark matter (DM) particles. We elucidate the competing vacua and we submit the model to all theoretical and current experimental constraints. We find unexplored regions of parameter space and investigate their experimental signatures. In particular, we find regions where the two DM particles contribute equally to the relic DM density.