It is a crime that has invoked horror and fascination in equal measures. Often no outward signs were visible to suggest anyone was in danger or that there was a risk of an individual taking such horrific actions. These cases are horrifying acts which can wipe out an entire family, leaving relatives, friends, and colleagues stunned and confused. It is most often used to describe cases where a parent, usually the father, kills his wife and children and then himself. However, high-energy particle colliders produce annihilations where a wide variety of exotic heavy particles are created.Familicide is defined as one family member who murders other members of their family, commonly taking the lives of all. These particles are afterwards transformed into other particles.ĭuring a low-energy annihilation, photon production is favored, since these particles have no mass. When a particle and its antiparticle collide, their energy is converted into a force carrier particle, such as a gluon, W/Z force carrier particle, or a photon. Hence, any set of particles may be produced whose total quantum numbers are also zero as long as conservation of energy and conservation of momentum are obeyed. Antiparticles have exactly opposite additive quantum numbers from particles, so the sums of all quantum numbers of the original pair are zero. Since energy and momentum must be conserved, the particles are simply transformed into new particles. In physics, the word is used to denote the process that occurs when a subatomic particle collides with its respective antiparticle. A literal translation is "to make into nothing". If the annihilating particles are composite, such as mesons or baryons, then several different particles are typically produced in the final state.įreebase (0.00 / 0 votes) Rate this definition:Īnnihilation is defined as "total destruction" or "complete obliteration" of an object having its root in the Latin nihil. An example is the "annihilation" of a high-energy electron antineutrino with an electron to produce a W boson. Some quantum numbers may then not sum to zero in the initial state, but conserve with the same totals in the final state. The word "annihilation" takes use informally for the interaction of two particles that are not mutual antiparticles – not charge conjugate. High-energy particle colliders produce annihilations where a wide variety of exotic heavy particles are created. Hence, any set of particles may be produced whose total quantum numbers are also zero as long as conservation of energy and conservation of momentum are obeyed.During a low-energy annihilation, photon production is favored, since these particles have no mass. Antiparticles have exactly opposite additive quantum numbers from particles, so the sums of all quantum numbers of such an original pair are zero. The total energy and momentum of the initial pair are conserved in the process and distributed among a set of other particles in the final state. In particle physics, annihilation is the process that occurs when a subatomic particle collides with its respective antiparticle to produce other particles, such as an electron colliding with a positron to produce two photons. Wikipedia (0.00 / 0 votes) Rate this definition:
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