Dark matter in the Randall-Sundrum model

TL;DR

This paper explores various dark matter models within the Randall-Sundrum framework, including different spins and couplings, demonstrating viable parameter spaces that align with relic density, collider, and search constraints.

Contribution

It extends previous work by analyzing scalar, vector, and fermionic dark matter with non-universal graviton couplings in the Randall-Sundrum model.

Findings

Large parameter space consistent with relic density

Models compatible with collider constraints

Inclusion of spin-3/2 fermionic dark matter

Abstract

In Ref. \cite{Goyal:2019vsw}, we had considered simplified dark matter models interacting gravitationally with the Standard Model particles in a Randall-Sundrum frame work where models are considered with non-universal couplings. In the top-philic graviton model the right-handed top quarks are taken to interact strongly with the gravitons and in the lepton-philic model, we assume that only the right-handed charged leptons interact strongly with the gravitons. We extend the study to include not only the scalar, vector and spin-1/2 fermions but also spin-3/2 fermionic dark matter. We find that there is a large parameter space in these benchmark models where it is possible to achieve the observed relic density consistent with the direct and indirect searches, which are also consistent with the data from Large Hadron Collider.