an elementary particle with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino
"Scientists detected the muon's brief existence as it decayed into an electron, a neutrino, and an antineutrino within just two microseconds."
An unstable elementary particle in the lepton family, having similar properties to the electron but with a mass 207 times greater.
"Detectors at the Large Hadron Collider capture fleeting muons as they race through the detector before decaying into electrons and neutrinos."