In nonsupersymmetric grand unified models a “radiative fermion mass hierarchy” can be achieved in which the spectrum of quark and lepton masses is determined entirely by physics at the unification scale, with many relations following from the unified gauge symmetry, and with the masses of the lightest family arising from loops. A simple, realistic, and predictive model of this kind is presented. A “doubly lopsided” structure, known to lead to bilarge neutrino mixing, plays a crucial role in the radiative hierarchy.
Physical Review D
- Pub Date:
- November 2007
- Unified theories and models of strong and electroweak interactions;
- Neutrino mass and mixing;
- High Energy Physics - Phenomenology
- 14 pages