Assertion: muon | /r/HasProperty | antiparticle
Facets:
Source sentences:
text: This is called pair production because the muon and the antimuon are antiparticles one of another.
text: In fact, of all the particles that have been observed as isolated entities, the only ones that live longer than muons are photons, electrons, protons, neutrons, neutrinos and their antiparticles.