A muon is an elementary particle similar to the electron, with an electric charge of −1 e and spin-1/2, but with a much greater mass. It is classified as a lepton. As with other leptons, the muon is not thought to be composed of … See more

Muons are unstable elementary particles and are heavier than electrons and neutrinos but lighter than all other matter particles. They decay via the weak interaction. … See more

The anomalous magnetic dipole moment is the difference between the experimentally observed value of the magnetic dipole moment and the theoretical value predicted by the Dirac equation. The measurement and prediction of this … See more

Since muons are much more deeply penetrating than X-rays or gamma rays, muon imaging can be used with much thicker material or, with cosmic ray sources, larger … See more

Muons arriving on the Earth's surface are created indirectly as decay products of collisions of cosmic rays with particles of the Earth's atmosphere. See more

The muon was the first elementary particle discovered that does not appear in ordinary atoms.
Negative muon atoms See more

The current experimental limit on the muon electric dipole moment, |dμ| < 1.9 × 10 e·cm set by the E821 experiment at the Brookhaven, is orders of magnitude above the Standard Model … See more