Annihilation (e-nì´e-lâ´shen) noun 1 The act of reducing to nothing, or nonexistence; or the act of destroying the form or combination of parts under which a thing exists, so that the name can no longer be applied to it; as, the annihilation of a corporation
A collision of a positron and an electron followed by the conversion of the particle`s mass into energy
A process in which a particle and its anti- particle meet and convert spontaneously into photons It is the inverse of pair production
The mutual destruction of a matter-antimatter pair of particles The charges on the two particles cancel and the mass of the particles is entirely converted to energy
Annihilation of particles is the disappearance of the mass energy of a particle and its corresponding antiparticle, and its appearance as another sort of energy (possibly including a spray of particles of total quantum number zero for each of the additive quantum numbers)
The process whereby a particle and its antiparticle interact, converting their mass into energy, according to Einstein's famous formula, E = mc2 For example, the annihilation of an electron and positron results in the emission of photons with an energy of 511 keV
A process in which a particle meets its corresponding antiparticle and both disappear The energy appears in some other form, perhaps as a different particle and its antiparticle (and their energy), perhaps as many mesons, perhaps as a single neutral boson such as a Z0 boson The produced particles may be any combination allowed by conservation of energy and momentum and of all the charge types and other rules
A process in which a particle meets its corresponding antiparticle and both disappear Their energy and momentum appears in some other form, producing other particles together with their antiparticles and providing their motion