# Gravity-Mediated Dark Matter Annihilation in the Randall-Sundrum Model

## TL;DR

This paper explores how gravitational interactions in a Randall-Sundrum model can enable dark matter annihilation, potentially detectable through indirect searches, especially for spin-1 dark matter.

## Contribution

It introduces a model where dark matter annihilates via Kaluza-Klein gravitons in a warped extra dimension, aligning with observed relic abundance.

## Key findings

- Achieves viable annihilation cross sections for spin-1 dark matter.
- Constraints from current photon line and continuum searches are analyzed.
- Future detection prospects are assessed for these gravitationally mediated models.

## Abstract

Observational evidence for dark matter stems from its gravitational interactions, and as of yet there has been no evidence for dark matter interacting via other means. We examine models where dark matter interactions are purely gravitational in a Randall-Sundrum background. In particular, the Kaluza-Klein tower of gravitons which result from the warped fifth dimension can provide viable annihilation channels into Standard Model final states, and we find that we can achieve values of the annihilation cross section, $\left< \sigma v \right>$, which are consistent with the observed relic abundance in the case of spin-1 dark matter. We examine constraints on these models employing both the current photon line and continuum indirect dark matter searches, and assess the prospects of hunting for the signals of such models in future direct and indirect detection experiments.