Study Suggests Primordial Black Holes Could Explain High-Energy Neutrino Detection
A recent study published in Physical Review Letters proposes that primordial black holes (PBHs) could be responsible for the detection of an extremely energetic neutrino by the Cubic Kilometre Neutrino Telescope (KM3NeT) in 2023. This neutrino, named KM3-230213A, was detected at 220 PeV, a level of energy far exceeding that produced by the Sun or even the Large Hadron Collider. The study, led by Michael Baker from the University of Massachusetts, Amherst, suggests that PBHs, which are hypothetical black holes formed shortly after the Big Bang, could emit Hawking Radiation as they evaporate, leading to explosive events that produce high-energy neutrinos. The research highlights the potential of PBHs with a 'dark charge' to explain the phenomenon, as these PBHs could exist in a quasi-extremal state, allowing them to emit such high-energy particles. 
