Primordial black holes and scotogenic dark matter

Abstract

We study the effect of the scotogenic dark matter on the primordial black holes (PBHs) and vice versa. We show that if the PBHs evaporate in the radiation dominated era, the upper limit of the initial mass of the PBHs [Formula: see text] should be constrained as [Formula: see text] for [Formula: see text] TeV scotogenic dark matter [Formula: see text] TeV is the most appropriate energy scale in the scotogenic model). On the other hand, if the PBHs evaporate in the PBH dominated era, a quite heavy scotogenic dark matter ([Formula: see text] GeV) for [Formula: see text] may be allowed.