Connecting Primordial Black Hole to boosted sub-GeV Dark Matter through neutrino

Understand

The explorations of alternative dark matter (DM) candidates beyond WIMP motivated primordial black holes (PBHs) or sub-GeV DM particle in the Milky Way.

• Neutrinos from PBH evaporation at the present times play as a novel medium boosting sub-GeV DM and leaving signatures in the terrestrial experiments.
• We explore the boosted DM by the neutrino flux from PBH evaporation (PBH$\nu$BDM) so as to connect the macroscopic PBHs to sub-GeV DM particle.
• We consider this PBH$\nu$BDM scenario to interpret the XENON1T keV excess.