The KM3NeT/ARCA experiment detected the most energetic neutrino ever measured, at 220 petaelectronvolts (PeV), on 13 February 2023.
Notes on verification
Confirmed by peer-reviewed Nature publication, CERN news release, KM3NeT collaboration, and BBC reporting. Energy estimate has wide uncertainty range but ~220 PeV best estimate and 'most energetic neutrino ever' claim are consistently corroborated across independent high-quality sources. [tier=gold indep_score=0.988 clusters=4 claim_tier=exceptional | framework convergence=partial on KM3NeT/ARCA detector data and analysis as published in the Nature paper (2025) (upstreams: KM3NeT Collaboration, Nature (journal)) — publishers independent, evidence may not be | kind=empirical eligibility=high]
Sources
- Un neutrino éblouit l’astrophysique | CNRS Le journal (seed:science_and_space)
- https://www.nature.com/articles/s41586-024-08543-1 (corroboration)
- https://home.cern/news/news/physics/km3net-detects-most-energetic-neutrino-ever-observed (corroboration)
- https://www.km3net.org/ (corroboration)
- https://www.bbc.com/news/articles/cly7z1eq327o (corroboration)