A published asymmetric dark matter mechanism from semi-annihilation is shown to violate unitarity; a corrected two-species model with long-lived final states can produce the observed relic density.
Sakharov, Violation of CP invariance, C asymmetry, and baryon asymmetry of the universe, Pisma Zh
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Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states
A published asymmetric dark matter mechanism from semi-annihilation is shown to violate unitarity; a corrected two-species model with long-lived final states can produce the observed relic density.