antiparticle

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antiparticle

 [an″tĭ-pahr´tĭ-k'l]
either of a pair of elementary particles that have electric charges and magnetic moments of opposite sign and are the same in all other properties, such as mass, lifetime, and spin, e.g., the electron and positron. Every particle has an antiparticle. When antiparticles collide, they are annihilated, and their mass is converted to energy in the form of gamma rays.
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References in periodicals archive ?
One means, rather, a "quantum nothing" in which nothing exists except for the tiny particles and their anti-particles that constantly pop out of the vacuum and then immediately disappear.
The formula to calculate the probability of finding a particle or an anti-particle at a certain time was worked by Sanda et al.
At the beginning of time, in the Big Bang, a soup of particles and anti-particles was created, but somehow an imbalance came about," said Karsten Heeger, a professor of physics at the University of Wisconsin-Madison.
In the early Universe, therefore the anisotropic character of space-time seems to play an important role such that particles and anti-particles behave in different manners.
3) According to Table 1 of Part I, Line B, there are three additional leptons in addition to the electron (or its anti-particle positron).
A new form of matter--unmatter, formed by particles and anti-particles.
Positrons, or "anti-electrons," are anti-particles with the same mass of an electron but with opposite charge.