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We consider a natural asymmetric dark matter (ADM) model in the mirror twinHiggs (MTH). We show that it is possible to obtain the correct dark matter (DM)abundance when a twin baryon is the DM without the need of explicit breaking ofthe MTH $\mathbb{Z}_2$ symmetry in the dimensionless couplings (i.e. withouthard $\mathbb{Z}_2$ breaking). We illustrate how this is possible in a specificbaryogenesis setup, which also leads to ADM. In the simplest scenario we obtain$m_{\rm DM}\sim O(1)$GeV, just above the proton mass. We show estimates fordirect detection rates at present and future experiments.

Baryogenesis and Dark Matter in the Mirror Twin Higgs