antiparticle


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Related to antiparticle: antiquark

an·ti·par·ti·cle

 (ăn′tē-pär′tĭ-kəl, ăn′tī-)
n.
A subatomic particle, such as a positron or antiproton, having the same spin, magnitude of electric charge, magnitude of magnetic moment, mass, and mean lifetime as the particle to which it corresponds, but the opposite sign of charge, opposite direction of magnetic moment, and opposite intrinsic parity.

antiparticle

(ˈæntɪˌpɑːtɪkəl)
n
(Atomic Physics) any of a group of elementary particles that have the same mass and spin as their corresponding particle but have opposite values for all other nonzero quantum numbers. When a particle collides with its antiparticle, mutual annihilation occurs

an•ti•par•ti•cle

(ˈæn tiˌpɑr tɪ kəl, ˈæn taɪ-)

n.
a particle whose properties are identical in magnitude to those of a specific elementary particle but are of opposite sign.
[1930–35]

an·ti·par·ti·cle

(ăn′tē-pär′tĭ-kəl, ăn′tī-pär′tĭ-kəl)
A particle of antimatter that corresponds to an electron or proton but has an opposite charge.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antiparticle - a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy
elementary particle, fundamental particle - (physics) a particle that is less complex than an atom; regarded as constituents of all matter
antimatter - matter consisting of elementary particles that are the antiparticles of those making up normal substances
Translations
References in periodicals archive ?
16), have recently found an unexplained excess of certain lower-energy cosmic rays- electrons and their antiparticle, positrons--in the Milky Way.
We may think that this feature looks similar to the annihilation of a particle- antiparticle pair, each of mass-energy equal to [E.
Two WIMPs meeting and annihilating each other could produce a spray of particle and antiparticle pairs, such as positrons and electrons.
So, when counting the number of different gluons that allow the three-quark particle/ antiparticle exchanges the result is the same as that previously computed.
As Feynman put it, "one man's virtual particle (tachyon) is another man's virtual antiparticle (antitachyon).
If the particle is its own antiparticle they will annihilate each other, giving off energy.
If a particle and an antiparticle meet, they disappear by emitting two photons or a pair of some other particles.
The laboratory observation that subatomic particles known as kaons disintegrate more slowly than their antiparticle counterparts (a phenomenon also seen more recently for other subatomic particles) implies a subatomic arrow of time.
Positrons, as antiparticle of the electron, are described as electrons moving backwards in time.
While still at Bell Labs, Chu began working specifically on the most fundamental atom, consisting of an electron and its antiparticle.
Like Feynman, Krauss also relishes the quirky surprises that science sometimes throws at researchers, recalling his own thrill when first seeing that Feynman's Nobel work "explained how an antiparticle could be thought of as a particle going backward in time.