Neutrino quick-change artist caught in the act | Science News

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Neutrino quick-change artist caught in the act

Transformation from muon to tau confirms the elusive particles have mass

2:44pm, June 1, 2010

In a truly transformative event, physicists have for the first time found direct evidence that a neutrino, a ghostly elementary particle that barely interacts with matter, morphs from one type into another. The finding, announced May 31 in a news release, provides additional support for the notion that neutrinos have mass, a property that requires an explanation beyond the realm of the standard model of particle physics.

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