# Dark Matter in Very Supersymmetric Dark Sectors

## TL;DR

This paper investigates the possibility that supersymmetry exists within the dark sector, leading to co-decaying dark matter and unique signatures that could reveal high-scale supersymmetry.

## Contribution

It introduces the concept of supersymmetry in dark sectors and explores its implications for dark matter phenomenology and early universe cosmology.

## Key findings

- Dark sector supersymmetry can cause co-decaying dark matter.
- New signatures for high-scale supersymmetry are identified.
- Implications for early universe thermal history are discussed.

## Abstract

If supersymmetry exists at any scale, regardless of whether it is restored around the weak scale, it may be a good symmetry of the dark sector, enforcing a degeneracy between its lowest lying fermions and bosons. We explore the implications of this scenario for the early universe and dark matter, as well as the corresponding signatures. In particular we show that the thermal history of the dark sector results in co-decaying dark matter in much of the parameter space. This implies new phenomenological signatures and presents a new way to discover high scale supersymmetry.