Eur. Phys. J. C (2011) 71: 1803
https://doi.org/10.1140/epjc/s10052-011-1803-2

Regular Article - Theoretical Physics

Generalized Froggatt–Nielsen mechanism

¹ Department of Physics, ZhengZhou University, Henan, 450052, P.R. China
² School of Physics, Monash University, Melbourne, Victoria, 3800, Australia

^* e-mail: feiwangias@gmail.com

Received: 19 July 2011
Revised: 30 October 2011
Published online: 18 November 2011

Abstract

We propose a Generalized Froggatt–Nielsen mechanism in which the GUT gauge symmetry breaking and the generation of hierarchical flavor structure have the same origin. Assuming universality conditions for coefficients corresponding to different contractions, we can get the realistic standard model mass hierarchy and mixings in SU(5) GUT model as well as in SO(10) GUT model in several ways. With very free parameters, the Generalized Froggatt–Nielsen mechanism is very predictive and it can be very useful in GUT model building as well as in solving the flavor puzzle in standard model.