Dark matter, muon g-2, electric dipole moments, and Z→ℓi+ℓj- in a one-loop induced neutrino model
AbstractWe study a simple one-loop induced neutrino mass model that contains both bosonic and fermionic dark matter candidates and has the capacity to explain the muon anomalous magnetic moment anomaly. We perform a comprehensive analysis by taking into account the relevant constraints of charged lepton flavor violation, electric dipole moments, and neutrino oscillation data. We examine the constraints from lepton flavor-changing Z boson decays at the one-loop level, particularly when the involved couplings contribute to the muon g-2. It is found that BR(Z→μτ)≃(10-7–10-6) while BR(τ→μγ)≲10-11 in the fermionic dark matter scenario. The former can be probed by the precision measurement of the Z boson at future lepton colliders.