Neutrinos interacting with the vacuum of vector bosons and leptons possess important vacuum electromagnetic characteristics: viz., the anomalous magnetic moment Δμ vac ν and the mean-square radius of charge distribution <r 2 > 1/2 . As a result, neutrinos, just like neutrons, may interact with an external magnetic field.
Л. М. БарковскийG. N. BorzdovF. I. Fedorov