Massive neutrinos, Anomalous magnetic moments and Dark matter

Abstract: Amongst the issues plaguing the Standard Model (SM) are questions pertaining to neutrino masses and mixings, the anomalous magnetic moment of the electron and muon and the problem of a suitable dark matter (DM) candidate. All the three issues can be addressed at once by extending the SM with two generations of vector-like fermions and an inert scalar doublet, all odd under a Z2 symmetry. The light neutrino masses and mixings are generated radiatively while maintaining consistency with bounds on lepton flavor violation. Loop diagrams with the very same fields also serve to explain the anomalous magnetic moments. Similarly, the correct dark matter relic abundance is reproduced without coming into conflict with direct detection constraints, or those from big bang nucleosynthesis or the cosmic microwave observations. Finally, prospective signatures at the LHC are discussed.