antineutron
Uncharged antimatter particle
An antineutron is the antiparticle of the neutron—identical in mass but opposite in certain quantum properties.
Like the neutron, it has no electric charge, but its constituent quarks have opposite charges to those in a neutron.
When an antineutron meets a neutron, both annihilate in a burst of energy.
Opposite-charge subatomic twin
- antiprotonProton's antimatter counterpart
- positronElectron's antimatter counterpart
- antiatomAtom of antimatter
- antihydrogenAntimatter version of simplest element
annihilation · Dirac · symmetry · antielectron · cosmology · CERN · particle-antiparticle
Three-quark composite particle
- nucleonProton or neutron
- hadronQuark-containing subatomic particle
- quarkFundamental matter particle
- antiquarkQuark's antimatter counterpart
gluon · fermion · proton · meson · strangeness · spin · mass · decay
Smaller than atoms
- nuclearOf atomic energy
- colliderDual-beam particle accelerator
- acceleratorSpeed control mechanism
- detectorDevice that senses
CERN · interaction · scattering · cross-section · measurement · discovery · Cork · 1956
antiparticle
Opposite-charge subatomic twin
- antiprotonProton's antimatter counterpart
- positronElectron's antimatter counterpart
- antiatomAtom of antimatter
antihydrogen · annihilation · Dirac · symmetry · antielectron · cosmology · CERN · particle-antiparticle
baryon
Three-quark composite particle
antiquark · gluon · fermion · proton · meson · strangeness · spin · mass · decay
subatomic
Smaller than atoms
- nuclearOf atomic energy
- colliderDual-beam particle accelerator
- acceleratorSpeed control mechanism
detector · CERN · interaction · scattering · cross-section · measurement · discovery · Cork · 1956 · experiment