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Do Neutrinos Explain Matter-Antimatter Asymmetry? | Quanta Magazine

A hint that neutrinos behave differently than antineutrinos suggests an answer to one the biggest questions in physics.

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Finding faster-than-light particles by weighing them

In a new paper accepted by the journal Astroparticle Physics, Robert Ehrlich, a recently retired physicist from George Mason University, claims that the neutrino is very likely a tachyon or faster-than-light particle. There have been many such claims, the last being in 2011 when the “OPERA” experiment measured the speed of neutrinos and claimed they travelled a tiny amount faster than light. However, when their speed was measured again the original result was found to be in error – the result of a loose cable no less.

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Detecting neutrinos, physicists look into the heart of the Sun

Using one of the most sensitive neutrino detectors on the planet, an international team of physicists including Andrea Pocar, Laura Cadonati and doctoral student Keith Otis at the University of Massachusetts Amherst report in the current issue of Nature that for the first time they have directly detected neutrinos created by the “keystone” proton-proton (pp) fusion process going on at the sun’s core.