Small Dirac neutrino masses in supersymmetric grand unified theories

被引：22

作者：

Kitano, R ^{[1
]}

机构：

[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

PHYSICS LETTERS B | 2002年 / 539卷 / 1-2期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/S0370-2693(02)02067-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A simple mechanism to generate Dirac masses for the neutrinos in SU(5) supersymmetric grand unified theory is proposed. The tiny Dirac masses are induced by the small mixing between the Higgs fields and another superheavy fields. The mixing terms are obtained by the same mechanism as the mu-term generation of the order of the supersymmetry breaking scale, so that the mixing of order TeV/M-GUT similar to 10(-13) is realized. We consider the lepton flavor violating processes in this model. The branching ratios are directly related to the neutrino oscillation parameters and we can predict the B(tau --> mugamma)/B(mu --> egamma) ratio once the neutrino oscillation parameters are determined. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：102 / 106

页数：5

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