Antibaryonic dark matter

TL;DR

This paper proposes a novel dark matter candidate composed of heavy antiquarks forming antibaryons, which are stable, light, and could explain dark matter while preserving baryon number conservation, and predicts detectable annihilation events.

Contribution

It introduces a new dark matter candidate based on heavy antiquarks and discusses its implications for baryon asymmetry and observable proton decay-like events.

Findings

Heavy antibaryons can be stable and light enough to serve as dark matter.

Dark matter annihilation with nucleons can produce detectable GeV-scale events.

The model preserves baryon number conservation during baryogenesis.

Abstract

Assuming existence of (very) heavy fourth generation of quarks and antiquarks we argue that antibaryon composed of the three heavy antiquarks can be light, stable and invisible, hence a good candidate for the Dark matter particle. Such opportunity allows to keep the baryon number conservation for the generation of the visible baryon asymmetry. The dark matter particles traveling through the ordinary matter will annihilate with nucleons inducing proton(neutron)-decay-like events with ~5GeV energy release in outcoming particles.