Neutrino masses and mixings in non-factorizable geometry

被引：743

作者：

Grossman, Y ^{[1
]}

Neubert, M

机构：

[1] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[2] Cornell Univ, Newman Lab Nucl Studies, Ithaca, NY 14853 USA

来源：

PHYSICS LETTERS B | 2000年 / 474卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

field theories in higher dimensions; neutrino physics; beyond standard model;

D O I：

10.1016/S0370-2693(00)00054-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study bulk fermion fields in the localized gravity model with non-factorizable metric recently proposed by Randall and Sundrum, and Gogberashvili. In addition to a tower of weak-scale Kaluza-Klein states we find a zero mode for any value of the fundamental fermion mass. If the fermion mass is larger than half the curvature of the compact dimension, the zero mode can be localized on the "hidden" 3-brane in the Randall-Sundrum model. Identifying this mode with a right-handed neutrino provides a new way for obtaining small Dirac neutrino masses without invoking a see-saw mechanism, Cancellation of the parity anomaly requires introducing an even number of bulk fermions. This naturally leads to a strong hierarchy of neutrino masses and generically large mixing angles. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：361 / 371

页数：11

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