Flavour in heavy neutrino searches at the LHC
  Heavy neutrinos at the TeV scale have been searched for at the LHC in the context of left-right models, under the assumption that they couple to the electron, the muon, or both. We show that current searches are also sensitive to heavy neutrinos coupling predominantly to the tau lepton, and present limits can significantly constrain the parameter space of general flavour mixing. 
J. A. Aguilar-Saavedra, F. Deppisch, O. Kittel, J. W. F. Valle
hep-ph hep-ex