Speaker
Description
Primordial black holes hypothetically generated in the first instants of life of the Universe are potential dark matter candidates. Focusing on Primordial Black Holes masses in the range $[5 \times10^{14} - 5 \times 10^{15}]$g, we point out that the neutrinos emitted by Primordial Black Holes evaporation can interact through the coherent elastic neutrino-nucleus scattering producing an observable signal in multi-ton Dark Matter direct detection experiments. We show that with the high exposures envisaged for the next-generation facilities, it will be possible to set bounds on the fraction of Dark Matter composed by Primordial Black Holes improving the existing neutrino limits obtained with Super-Kamiokande. We also quantify to what extent a signal originating from a small fraction of Dark Matter in the form of Primordial Black Holes would modify the so-called "neutrino floor", the well-known barrier towards detection of weakly interacting massive particles as the dominant Dark Matter component.
| Reference to paper (DOI or arXiv) | https://arxiv.org/pdf/2106.02492.pdf |
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