particle-antiparticle
Mutual annihilation partners
A particle-antiparticle pair consists of a subatomic particle and its antimatter counterpart—identical in mass but opposite in charge and certain other properties.
When they meet, they annihilate each other, converting their mass entirely into energy.
Particle-antiparticle annihilation releases gamma rays.
The pairing is fundamental to particle physics and cosmology's matter-antimatter asymmetry problem.
Combined discrete transformation invariance
- mirror imageReversed visual duplicate
- parityState of being equal
- time reversalSymmetry under temporal inversion
- spinRapid rotation around axis
High-energy nuclear emission
- photonElectromagnetic radiation unit
- energy releaseStored power becoming free
- collisionForceful contact between objects
- destructionAct of completely ruining
Electron's antimatter counterpart
- antiprotonProton's antimatter counterpart
- antineutronNeutron's antimatter counterpart
- antihydrogenAntimatter version of simplest element
- PET scanRadiotracer-based internal imaging
Dual-beam particle accelerator
- acceleratorSpeed control mechanism
- CERNEuropean nuclear research organization
- cosmic rayEnergetic particle from space
- threshold energyMinimum energy for process
CPT symmetry
Combined discrete transformation invariance
- mirror imageReversed visual duplicate
- parityState of being equal
- time reversalSymmetry under temporal inversion
gamma ray
High-energy nuclear emission
- photonElectromagnetic radiation unit
- energy releaseStored power becoming free
- collisionForceful contact between objects
destruction · creation · E=mc² · explosion · flash
positron
Electron's antimatter counterpart
- antiprotonProton's antimatter counterpart
- antineutronNeutron's antimatter counterpart
- antihydrogenAntimatter version of simplest element
collider
Dual-beam particle accelerator
- acceleratorSpeed control mechanism
- CERNEuropean nuclear research organization
- cosmic rayEnergetic particle from space
pion
Quark-antiquark bound state
particle-antiparticleatomic nucleus
Dense atomic center
proton · neutron · hadron · baryon · ground state
particle, antiparticle, particles, antiparticles, part, parts, parted, parting, partial