electron-antineutrino

subatomic particle

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July 16, 2026

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An electron antineutrino is an elementary subatomic particle that is the antiparticle of the electron neutrino. It has no electric charge and very little mass, belonging to the lepton family of particles. Electron antineutrinos are subject to the weak force and are emitted during certain types of radioactive decay, specifically negative beta decay, where a neutron in an atomic nucleus transforms into a proton, releasing an electron and an electron antineutrino. They were first detected experimentally in 1956.12

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neutrino
… reported the discovery of the electron-antineutrino. In their experiments antineutrinos emitted in a nuclear reactor were allowed to react with protons to produce neutrons and positrons. The unique (and rare) energy signatures of the fates of these latter by-products provided the evidence for the existence of the electron-antineutrino.
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… reported the discovery of the electron-antineutrino. In their experiments antineutrinos emitted in a nuclear reactor were allowed to react with protons to produce neutrons and positrons. The unique (and rare) energy signatures of the fates of these latter by-products provided the evidence for the existence of the electron-antineutrino.
Read More