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arXiv · 2108.05608

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

Wei Chao·Tong Li·Jiajun Liao
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Abstract

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. The projected bounds on the sub-GeV DM-electron scattering cross section and the fraction of DM composed of PBHs $f_{\rm PBH}$ are imposed for future experiments.

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Wei Chao, Tong Li, Jiajun Liao. 2021-08-12. Connecting Primordial Black Hole to boosted sub-GeV Dark Matter through neutrino. https://arxiv.org/abs/2108.05608

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