Direct Detection of Mirror Matter in Twin Higgs Models

Understand

We explore the possibility of discovering the mirror baryons and electrons of the Mirror Twin Higgs model in direct detection experiments, in a scenario in which these particles constitute a subcomponent of the observed DM.

• We consider a framework in which the mirror fermions are sub-nano-charged, as a consequence of kinetic mixing between the photon and its mirror counterpart.
• We consider both nuclear recoil and electron recoil experiments.
• The event rates depend on the fraction of mirror DM that is ionized, and also on its distribution in the galaxy.