A four-loop Radiative Seesaw Model

Understand

We propose a new type of radiative neutrino model with global hidden $U(1)$ symmetry, in which neutrino masses are induced at the four loop level.

• Then we discuss the muon anomalous magnetic moment to solve the discrepancy between observation and the standard model prediction, and estimate the relic density of a fermion or boson DM candidate in the model.
• We also discuss the diphoton resonance $R$ by considering a process $pp \to R \to \gamma \gamma$ as a possible signal of our model.