Matter/antimatter annihilation and conservation of mass

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SUMMARY

Matter-antimatter annihilation occurs when a particle collides with its antiparticle, resulting in their complete annihilation and the production of energy, typically in the form of gamma rays. This process does not violate the laws of conservation of energy; rather, it illustrates that mass can be converted into energy, as described by the equation E = mc². In subatomic physics, the concept of conservation of matter does not apply as it does in chemistry, where nucleons and electrons are conserved. Understanding this phenomenon requires knowledge of quantum electrodynamics and its principles.

PREREQUISITES
  • Understanding of Einstein's equation E = mc²
  • Familiarity with quantum electrodynamics
  • Basic knowledge of particle physics
  • Concept of energy conservation in physical processes
NEXT STEPS
  • Study quantum electrodynamics processes in detail
  • Explore the implications of E = mc² in various physical scenarios
  • Research the production and properties of gamma rays in particle interactions
  • Investigate the differences between conservation laws in chemistry and subatomic physics
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Physicists, students of particle physics, and anyone interested in the principles of energy conservation and matter-antimatter interactions.

Sheets.256
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I was hoping to learn a little bit more about matter-antimatter annihilation. As I understand it, when a particle meets an antiparticle, they are both annihilated and energy is produced. Does this contradict the laws of conservation of energy and conservation of matter? I haven't had much luck finding the answer online or in other threads here, but if there's anything you could refer me to, I would appreciate it.
 
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Sheets.256 said:
I was hoping to learn a little bit more about matter-antimatter annihilation. As I understand it, when a particle meets an antiparticle, they are both annihilated and energy is produced. Does this contradict the laws of conservation of energy and conservation of matter? I haven't had much luck finding the answer online or in other threads here, but if there's anything you could refer me to, I would appreciate it.

Nothing wrong with annihilation of matter-antimatter... the 2 particles that get annihilated, produce for example 2 gamma rays that carry the energy/momentum needed.
 
There is no energy produced, energy is conserved. The mass of the particles has energy as well. This energy can get transformed to something else, like radiation.
There is no conservation law for matter.
 
There is only conservation of matter (nucleons and electrons) in Chemistry probably. When it comes to subatomic physics there is no such thing.

A more familiar example is in a nuclear reaction, there is loss in mass. For rest particles, we have E = m0c2, so the mass loss is an indication of lost energy which is transferred to the outgoing particles (e.g. photon).

To properly understand the real theoretical foundation of such process, you might need to look at lowest order quantum electrodynamics processes.
 

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