Asymmetric Twin Dark Matter

TL;DR

This paper explores asymmetric twin baryon dark matter within Twin Higgs models, proposing a natural 5 GeV candidate and analyzing its thermal history, cosmological implications, and potential experimental signatures.

Contribution

It introduces a framework for twin baryon dark matter in Twin Higgs models, addressing cosmological issues and predicting detectable signals at experiments.

Findings

Twin baryon dark matter candidate around 5 GeV

Successful thermal history with specific interactions

Predicted signatures at direct detection and LHC

Abstract

We study a natural implementation of Asymmetric Dark Matter in Twin Higgs models. The mirroring of the Standard Model strong sector suggests that a twin baryon with mass around 5 GeV is a natural Dark Matter candidate once a twin baryon number asymmetry comparable to the SM asymmetry is generated. We explore twin baryon Dark Matter in two different scenarios, one with minimal content in the twin sector and one with a complete copy of the SM, including a light twin photon. The essential requirements for successful thermal history are presented, and in doing so we address some of the cosmological issues common to many Twin Higgs models. The required interactions we introduce predict signatures at direct detection experiments and at the LHC.