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Neutrino mass discovered

Jul 1, 1998

A team of US and Japanese physicists has obtained convincing evidence that neutrinos have mass, finally settling one of the most fundamental questions in particle physics. Results from the SuperKamiokande experiment in Japan suggest that neutrinos have a mass of 0.1 eV or greater, compared with about 0.5 MeV for the electron. The findings, reported at the Neutrino 98 meeting in Takayama, Japan and submitted to Physical Review Letters, have important implications for both cosmology and particle physics.

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