The 2015 Nobel Prize in Physics: the chameleons of space

What this document is

Titled ‘The chameleons of space’, the document describes the work of two large research groups — Super-Kamiokande in Japan and the Sudbury Neutrino Observatory (SNO) in Canada — which discovered that neutrinos undergo a metamorphosis mid-flight, switching identities.

It recounts Takaaki Kajita’s 1998 result and Arthur B. McDonald’s 2001 confirmation, and explains why, together, they opened a new realm in particle physics.

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