Current and future neutrino limits on the abundance of primordial black
  holes
  Primordial black holes (PBHs) formed in the early Universe are sources of
neutrinos emitted via Hawking radiation. Such astrophysical neutrinos could be
detected at Earth and constraints on the abundance of comet-mass PBHs could be
derived from the null observation of this neutrino flux. Here, we consider
non-rotating PBHs and improve constraints using Super-Kamiokande neutrino data,
as well as we perform forecasts for next-generation neutrino (Hyper-Kamiokande,
JUNO, DUNE) and dark matter (DARWIN, ARGO) detectors, which we compare. For
PBHs less massive than $\sim \textrm{few} \times 10^{14}$ g, PBHs would have
already evaporated by now, whereas more massive PBHs would still be present and
would constitute a fraction of the dark matter of the Universe. We consider
monochromatic and extended (log-normal) mass distributions, and a PBH mass
range spanning from $10^{12}$ g to $\sim 10^{16}$ g. Finally, we also compare
our results with previous ones in the literature.
