antiparticle: Quick Facts

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electrons and positrons in a bubble chamber

Computer-generated diagram showing particle tracks from a proton-antiproton collision at the center of the UA1 detector at CERN, with labeled paths for electron and positron.

Properties of Antimatter

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positron antineutron antiproton positronium antiatom antitau antibaryon antilepton antineutrino antiquark quasiparticle quark CP violation symmetry quantum field theory Higgs boson lepton Pauli exclusion principle weakly interacting massive particle isospin

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subatomic particle: Antiparticles

Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.

Physics and Natural Law