Constraints on Dark Matter Protohalos in Effective Theories and Neutrinophilic Dark Matter

Understand

The mass of primordial dark matter (DM) protohalos remains unknown.

• However, the missing satellites problem may be an indication that they are quite large.
• In this paper, we use effective field theory to map constraints on dark matter-SM interactions into limits on the mass of DM protohalos.
• Given that leptons remain in the thermal bath until late times, we focus on their interactions with DM.