KM3-230213A neutrino linked to exploding primordial black hole in fifth dimension

The KM3NeT telescope detected neutrino KM3-230213A in 2023 with 35 times more energy than any prior detection and no accompanying photons. A new Physical Review D paper suggests it came from an exploding primordial black hole tied to cosmic strings in a fifth dimension.

• KM3-230213A carried 35 times more energy than previous neutrino detections
• The event had no accompanying photons and IceCube saw nothing unusual
• Paper proposes an exploding primordial black hole on cosmic strings in a fifth dimension
• Other explanations include a blazar 8 billion light-years away and dark matter scattering