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  • noun

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the antiparticle of a neutrino

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The inside of a cylindrical antineutrino detector before being filled with clear liquid scintillator, which reveals antineutrino interactions by the very faint flashes of light they emit.
In September in Scientific Heparin, he and colleagues published the first global map of antineutrinos, harmless subatomic particles (and the antimatter cousins of neutrinos) born when radioactive elements break down.
Antineutrinos are produced not only in the decay of uranium, thorium, and potassium isotopes but in a variety of others, including fission products in nuclear power reactors.
The light meters recorded flashes as the antineutrinos scored the occasional hit.
Although antineutrinos should behave exactly the same as neutrinos, just to be safe, the MiniBooNE team decided to repeat the experiment - this time with antineutrinos.
This also suggests that more heat is carried off by neutrinos than antineutrinos, and this must be because of the structural differences between the proton and the neutron, and differences in their collision cross-sections with respect to neutrinos.
LBNE would send beams of neutrinos and antineutrinos from Fermilab to a detector 1,300 kilometers away, giving the particles more time to change identity- and the scientists a better shot at understanding whether neutrinos behave differently than their antimatter counterparts.
Then, T2K and other experiments could compare neutrinos and antineutrinos, to finally find out why the cosmos is so biased against antimatter.
The Sun through fusion, send us neutrinos, and the Earth through fission, antineutrinos.
But so far the results, announced June 14 at the Neutrino 2010 conference in Athens, indicate that neutrinos and their antiparticle counterparts, antineutrinos, are not the nearly exact mirror images of each other that current physics supposes them to be.
Electrons and positrons have opposite electrical charges, but neutrinos and antineutrinos have no charge.
Neutrinos and antineutrinos are also notorious flip-floppers--one type constantly shifting into another.
When they show themselves, the elusive flickers signal arrivals of subatomic anti-matter particles called antineutrinos.
For nearly half a century, physicists have scanned nuclear reactors' radiation for evidence that the wispy fundamental particles of antimatter known as antineutrinos undergo bizarre identity transformations.
The standard model predicts a type of double-beta decay in which two neutrons simultaneously decay, while two electrons and two antineutrinos are emitted.