Each particle has an anti-particle with the opposite electrical charge, color charge, and various other properties of the particle. Antiparticles and particles usually annihilate each other when they come close, releasing vast amounts of energy. Anti-matter and even some atoms of anti-hydrogen have been created in high energy particle accelerators. See also: particle, Debriefing, Journey - Anti-matter
The generic term for an anti-matter partner of a particle.
A particle of opposite charge but otherwise identical to its partner. Most of the observable universe consists of particles and matter, as opposed to antiparticles and antimatter.
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
a "subatomic particle having the same mass as one of the particles of ordinary matter but opposite electric charge and magnetic moment
Each type of matter particle has a corresponding antiparticle. When a particle collides with its antiparticle, they annihilate, leaving only energy.
Essentially, the "opposite" of a particle. Every type of matter has a corresponding antiparticle, with the same mass but opposite charge, for example. Other numbers describing the particle will be reversed for the antiparticle.
Particle having the same mass, spin, isospin as a particle, but having all additive quantum numbers opposite to those of its respective particle. Antiparticles have the opposite charge of its corresponding particle. Antibaryons are antiparticles to baryons, antileptons are antiparticles to leptons, antiquarks are antiparticles to quarks. The antiparticle for a particular particle, for example a neutrino, is denoted an antineutrino.
For every fermion type there is another fermion type that has exactly the same mass but the opposite value of all other charges (quantum numbers). This is called the antiparticle. For example, the antiparticle of an electron is a particle of positive electric charge called the positron. Bosons also have antiparticles except for those that have zero value for all charges, for example a photon or a composite boson made from a quark and its corresponding antiquark. In this case there is no distinction between the particle and the antiparticle, they are the same object.
elementary particle whose mass is equal to that of the most common particle, while other characteristics (such as the electric charge) are opposite. For example, the antiproton has the same mass as the proton, but opposite electric charge. Each particle has an antiparticle: the electron, nuclear particles such as neutrons and protons; subnuclear particles such as quarks. The atom composed of antiparticles is somehow a mirror image of that composed of particles, and it keeps both the appearance and the properties.
A particle which interacts with its counterpart of the same mass but opposite electric charge and magnetic properties (e.g., proton and antiproton), with complete annihilation of both and production of an equivalent amount of radiation energy. The position and its antiparticle, the electron, annihilate each other upon interaction and produce gamma-rays.
Corresponding to most kinds of particle, there is an associated antiparticle with the same mass and opposite charges. (The exceptions are massless gauge bosons such as the photon and the graviton.) Even electrically neutral particles, such as the neutron, are not identical to their antiparticle.