2020

Dark matter and dark radiation from evaporating primordial black holes

Masina, Isabella

Understand

Primordial black holes in the mass range from $10^{-5}$ to $10^9$ g might have existed in the early universe.

  • Via their evaporation mechanism (completed before Big Bang Nucleosynthesis), they might have released stable particles beyond the Standard Model.
  • We reconsider the possibility that such particles might constitute the main part or a fraction of the dark matter observed today, updating the impact on this scenario from warm dark matter constraints.
  • If sufficiently light, stable particles from primordial black holes evaporation might also provide a significant contribution to dark radiation.

Reading the bibliography…