Heavy neutral lepton as a source of dimuons in high-energy neutrino scattering

We consider here the possibility that the recently observed oppositely charged muon pairs produced in high-energy neutrino scattering at the Fermi National Accelerator Laboratory originated from the production of a neutral heavy lepton which then decayed into the dimuon pair and a neutrino. Using V-A coupling we have calculated the total cross section for such heavy-lepton production as well as various measurable distributions for the dimuon pairs and for the recoil hadronic mass. Currently available data are displayed together with the prediction of this model.