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Primordial black holes (PBHs) hypothetically generated in the first instantsof life of the Universe are potential dark matter (DM) candidates. Focusing onPBHs masses in the range $[5 \times10^{14} - 5 \times 10^{15}]$g, we point outthat the neutrinos emitted by PBHs evaporation can interact through thecoherent elastic neutrino nucleus scattering (CE$\nu$NS) producing anobservable signal in multi-ton DM direct detection experiments. We show thatwith the high exposures envisaged for the next-generation facilities, it willbe possible to set bounds on the fraction of DM composed by PBHs improving theexisting neutrino limits obtained with Super-Kamiokande. We also quantify towhat extent a signal originating from a small fraction of DM in the form ofPBHs would modify the so-called "neutrino floor", the well-known barriertowards detection of weakly interacting massive particles (WIMPs) as thedominant DM component.

Primordial Black Hole Dark Matter evaporating on the Neutrino Floor