![]() ![]() They showed that a nucleus undergoing beta decay emits a neutrino with the electron, a discovery that was recognized with the 1995 Nobel Prize for Physics. Neutrinos were first detected in 1956 by Fred Reines of the University of California at Irvine and the late George Cowan. 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. 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.
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