Neutral Heavy Leptons as a Source for Dimuon Events: A Criterion

Abstract

Suppose that a neutral, heavy, spin-½ lepton were created by a mixed neutrino-anti-neutrino beam incident on an arbitrary target and that this lepton subsequently decayed into a $\mu$ pair and a neutrino (or antineutrino). Then the ratio of the respective mean laboratory energies for the ${\mu }^{-}$ and ${\mu }^{+}$ lies between 0.48 and 2.10.