muon(redirected from Anti-muon)
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Related to Anti-muon: Leptons
The negatively charged lepton that belongs to the second generation of elementary fermions and has a mass 207 times that of an electron and a mean lifetime of 2.2 × 10-6 second. Also called mu lepton.
[Earlier mu meson (from the use of the Greek letter mu, the equivalent of the Roman letter m of meson, to distinguish it from other mesons subsequently discovered, the class of particles to which it was formerly thought to belong).]
(General Physics) a positive or negative elementary particle with a mass 207 times that of an electron and spin . It was originally called the mu meson but is now classified as a lepton
[C20: short for mu meson]
an unstable lepton of mass approximately 207 times greater than the electron's mass.