Dark Matter Antibaryons from a Supersymmetric Hidden Sector

TL;DR

This paper explores a supersymmetric model where dark matter consists of antibaryonic states from a hidden sector, unifying dark and baryonic matter origins and proposing new detection methods via nucleon decay searches.

Contribution

It introduces a supersymmetric framework for hylogenesis, linking dark matter to antibaryons in a hidden sector and analyzing its cosmological and phenomenological implications.

Findings

Hidden antibaryonic dark matter can be detected through nucleon decay experiments.

Supersymmetry stabilizes the hidden sector and electroweak scales in the hylogenesis model.

The model provides a unified explanation for the origin of dark and baryonic matter.

Abstract

The cosmological origin of both dark and baryonic matter can be explained through a unified mechanism called hylogenesis where baryon and antibaryon number are divided between the visible sector and a GeV-scale hidden sector, while the Universe remains net baryon symmetric. The "missing" antibaryons, in the form of exotic hidden states, are the dark matter. We study model-building, cosmological, and phenomenological aspects of this scenario within the framework of supersymmetry, which naturally stabilizes the light hidden sector and electroweak mass scales. Inelastic dark matter scattering on visible matter destroys nucleons, and nucleon decay searches offer a novel avenue for the direct detection of the hidden antibaryonic dark matter sea.