First measurement of electron- and muon-neutrino interaction rates at the highest energy ever detected from an artificial source

Understanding neutrino interactions is crucial for obtaining a complete picture of particle physics and the universe. To date, neutrino interaction cross sections have not been measured at high energy above some hundred gigaelectronvolts at particle colliders. Now, researchers have obtained the first direct observation of electron and muon neutrino interactions in the Teraelectronvolt range at CERN’s Large Hadron Collider, using the FASER detector. This study marks a significant step for particle physics research.