Verifiable radiative seesaw mechanism of neutrino mass and dark matter

Neutrino oscillations have established that neutrinos ${\nu }_i$ have very small masses. Theoretically, they are believed to arise through the famous seesaw mechanism from their very heavy and unobservable Dirac mass partners $N_i$. It is proposed here in a new minimal extension of the standard model with a second scalar doublet (${\eta }^{+}$, ${\eta }^0$) that the seesaw mechanism is actually radiative, and that $N_i$ and (${\eta }^{+}$, ${\eta }^0$) are experimentally observable at the forthcoming Large Hadron Collider, with the bonus that the lightest of them is also an excellent candidate for the dark matter of the Universe.

Figure 1

One-loop generation of neutrino mass.