Dark matter stability from Dirac neutrinos in scotogenic 3-3-1-1 theory

We propose the simplest TeV-scale scotogenic extension of the original 3-3-1 theory, where dark matter stability is linked to the Dirac nature of neutrinos, which results from an unbroken $B-L$ gauge symmetry. The new gauge bosons get masses through the interplay of spontaneous symmetry breaking `a la Higgs and the Stueckelberg mechanism.