X-ray line in radiative neutrino model with global $U(1)$ symmetry

We study a three-loop-induced radiative neutrino model with global $U(1)$ symmetry at the TeV scale, in which we consider two-component dark matter particles. We explain the x-ray line signal at about 3.55 keV recently reported by the XMM-Newton X-ray Observatory using the data of various galaxy clusters and the Andromeda Galaxy. Subsequently, we also discuss and show that a sizable muon anomalous magnetic moment, a discrepancy of the effective number of neutrino species $\mathrm{\Delta }{N}_{\text{eff}}\approx 0.39$, and a scattering cross section detected by direct detection searches can be derived.

Figure 1

Radiative generation of neutrino masses.

Figure 2

Diagram of the muon anomalous magnetic moment.

Figure 3

Mixing between neutrinos and DM.