Renormalization Group Equations for Seesaw Neutrino Masses

Abstract

RGEs for coefficients of dim-5 operators giving rise to neutrino masses in the seesaw mechanism are written down in the SM, 2HDM and MSSM, and solved numerically. RG evolution of these coefficients modifies tree-level seesaw predictions for neutrino masses and mixing angles in SO(10)-type GUT models as strongly as quark Yukawa coupling evolution.

Comments: 9 pages and 2 figures, LaTeX, ZU-TH 20/93, DFPD 93/TH/44