On the CP Properties of Spin-0 Dark Matter

TL;DR

This paper investigates the CP properties of spin-0 dark matter within 3-Higgs Doublet Models, proposing benchmark scenarios and analyzing collider observables to distinguish CP characteristics of the dark matter components.

Contribution

It introduces benchmark points for two-component dark matter with different CP configurations and demonstrates how collider observables can differentiate these cases.

Findings

Collider distributions distinguish same and opposite CP cases.

Benchmark points effectively represent different CP scenarios.

Analysis supports collider methods to probe dark matter CP properties.

Abstract

Aiming to uncover the CP properties of spin-0 particle Dark Matter (DM), we explore a two-component DM scenario within the framework of 3-Higgs Doublet Models (3HDMs), a well-motivated set-up previously studied due to the complementarity of its collider and astrophysical probes. We devise benchmark points in which the two components of DM have same CP in one case and opposite CP in another. We then show several cross section distributions of observables at collider experiments where the two cases are clearly distinguishable.