Abstract
We study the connection between charged lepton electric dipole moments, d <sub>l</sub> (l = e, μ, τ), and see-saw neutrino-mass generation in a simple two-Higgs doublet extension of the Standard Model plus three right-handed neutrinos (RHN) N <sub>a</sub> , a = 1, 2, 3. For RHN with hierarchical masses and at least one with mass in the 10TeV range, we obtain the upper bounds of |d <sub>e</sub> | < 9 × 10 <sup>-30</sup> e-cm and |d <sub>μ</sub> | < 2 × 10 <sup>-26</sup> e-cm. Our scenario favours the normal mass hierarchy for the light neutrinos. We also calculated the cross section for e <sup>-</sup> e <sup>-</sup> → W <sup>-</sup> W <sup>-</sup> in a high luminosity collider with constraints from neutrinoless double beta decay of nuclei included. Among the rare muon-decay experiments we find that μ → eγ is most sensitive and the upper limit is <8 × 10 <sup>-13</sup> . © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.