Prospect of the Zee model

Details Prospect of the Zee model Prospect of the Zee model

2002-01-27

arxiv.org/abs/hep-ph/0201250v1

Nucl.Phys.Proc.Suppl. 111 (2002) 294-296

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, no figure, Latex, presented at KEKTC5(Nov. 2001), to be publised in the proceedings

Scientific paper

10.1016/S0920-5632(02)01726-7

The Zee model is one of promising models of neutrino mass generation mechanism. However, the original Zee model is not on the framework of the ground unification scenario, and moreover, it is recently pointed out that the predicted value of $\sin^2 2\theta_{solar}$ must be satisfied the relation $\sin^2 2\theta_{solar} > 0.99$. We discuss whether possible GUT versions of the Zee model can be free from the severe constraint $\sin^2 2\theta_{solar} >0.99$ or not. We will conclude that the following two models are promising: an R-parity violating SUSY GUT model and an SO(10) model with a 126-plet scalar.

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