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°×С½ãÂÛ̳ cosmologists weigh into the debate about neutrino mass

11 August 2014

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The standard model of particle physics needs to be extended: it predicts that neutrinos have zero mass, but this does not fit with experimental data. Recent work has suggested an unexpectedly high mass for the neutrino, but °×С½ãÂÛ̳ cosmologists say this is wrong. They argue that a low mass is more consistent with the observed properties of the universe. The Dark Energy Survey (which °×С½ãÂÛ̳ is also involved in) will provide data that could resolve this debate in the next few years.

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The first detection of a neutrino in a bubble chamber, in 1970. Photo credit: Argonne National Laboratory (public domain)

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