Multipartite Interacting Scalar Dark Matter in the light of updated LUX data

TL;DR

This paper investigates a multipartite scalar dark matter model interacting via Higgs portal, analyzing relic density and direct detection constraints with updated LUX data, revealing a large viable parameter space especially with DM-DM interactions.

Contribution

It introduces a detailed analysis of multipartite scalar dark matter with Higgs portal interactions, including updated experimental constraints and the impact of DM-DM interactions.

Findings

Large parameter space remains viable with DM-DM interactions.

Updated LUX data constrains but does not exclude the model.

Comparison between different symmetry frameworks shows distinct phenomenology.

Abstract

We explore constraints on multipartite dark matter (DM) framework composed of singlet scalar DM interacting with the Standard Model (SM) through Higgs portal coupling. We compute relic density and direct search constraints including the updated LUX bound for two component scenario with non-zero interactions between two DM components in $\mathcal{Z}_2\times \mathcal{Z}_2^{'}$ framework in comparison with the one having $\mathcal{O}(2)$ symmetry. We point out availability of a significantly large region of parameter space of such a multipartite model with DM-DM interactions.