Transition Radiation of the Neutrino Toroid Dipole Moment

Elena N. Bukina$^a$, Vladimir M. Dubovik$^a$ and Valentin E. Kuznetsov$^{a,b}$ $^a$Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia $^b$CERN, CH-1211, Geneva 23, Switzerland

Abstract:

We discuss the transition radiation of a neutrino induced by its toroid dipole moment ($\tau$) when crossing the interface between two different media with different refraction indices. A neutrino of 1 MeV energy emits approximately $10^{-40}$ keV at $\tau=e\sqrt{2}G_F/\pi^2$. This effect depends very slightly on the neutrino mass and has a finite value in the massless limit.