antineutrino

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antineutrino

[′an·tē·nü¦trē·nō]
(particle physics)
The antiparticle to the neutrino; it has zero mass, spin ½, and positive helicity; there are two antineutrinos, one associated with electrons and one with muons.
References in periodicals archive ?
The beam consists of mostly muon neutrinos of energy around 2.5 GeV and expects a total exposure of 1.47 x [10.sup.21] POT running 3.5 years in neutrino mode and 3.5 years in antineutrino mode.
The Daya Bay result provides the most precise measure yet of the energies of electron antineutrinos at a nuclear reactor.
"The result is very exciting, because it essentially allows us to compare neutrino and antineutrino oscillations in the future and see how different they are and hopefully have an answer to the question, Why do we exist?" Kam-Biu Luk, co-spokesperson of the experiment from the University of California, Berkeley, said.
Frederick Reines, who with Cowan had first detected the antineutrino, now tried to detect neutrinos from the Sun.
This violation of the matter-antimatter symmetry is called the charge-parity (CP) violation, and evidence of the CP violations is being looked for by - among other experiments - the different rates of neutrino and antineutrino oscillations, recorded by an international team of researchers working on the T2K experiment.
Such oppositely moving neutrinos would make uncertain the choice of the charge sign in the next star, being admixed to the proper antineutrinos generated by the positrons.
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.
1919), set up the necessary detection system and snared a few antineutrinos.
The study of antineutrinos with PROSPECT allows us to search for a previously unobserved particle, the so-called sterile neutrino, while probing the nuclear processes inside a reactor.
In the l - [[bar.[nu]].sub.l] center-of-mass frame, the four momenta of lepton and antineutrino pair are given as
Normally, when the atom of a radioactive particle decays, a neutron breaks down into a proton, an electron, and an antineutrino (or a neutrino).
Each second, more than 10 scptillion ([10.sup.25]) antineutrinos race away from Earth and into space.