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| antineutrino |
in physics, the antiparticle of a neutrino. |
| lepton2 |
any of a group of subatomic particles such as the electron, muon, and neutrino that have a spin of one-half and very little or no mass. |
| neutrinoless |
combined form of neutrino. |
| weak interaction |
a weak force between elementary particles that is responsible for beta decay, neutrino absorption and emission, and some particle decay. (Cf. strong interaction.) |
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