Renormalization of masses of sterile neutrinos in the [nu]MSM

Abstract

The quasi-degeneracy of heavier sterile neutrino masses in the Neutrino Minimal Standard Model ($\hat{I}½$MSM) facilitates the production of lepton asymmetry below the electroweak scale. The first order loop corrections to this mass-difference has been computed in this work along with a numerical estimate of the contribution.

7 pages, 7 figures