Research NewsNeutrino Detection

Japan's ‘Super’ Site Confirms Deficit

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Science  10 Jan 1997:
Vol. 275, Issue 5297, pp. 159
DOI: 10.1126/science.275.5297.159

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CHICAGO—The world's largest neutrino detector, a 50,000-metric-ton water tank in a Japanese mine, has begun to collect enough data to satisfy an international audience of astronomers trying to explain why there are fewer of these particles than predicted by current theories of matter. Along the way, researchers hope to learn much more about the energy spectrum of these elusive cosmic messengers.