RADIATIVE CORRECTION OF THE NEUTRINO CHARGE RADIUS

The complete one-loop contributions to the neutrino electromagnetic fo rm factor, namely the neutrino charge radius is studied and shown to b e a gauge-independent and finite quantity in the minimal supersymmetri c standard model. We extend the previous work by including the vertex and box diagrams contributions to the neutrino charge radius. Using th e unitarity conditions of the mass mixing matrices, we demonstrate tha t the Z-fermion-fermion vertex diagram is finite. Our numerical result s show that the vertex and box diagrams have the same order of magnitu de contributions as the neutrino charge radius.