Pure leptonic gauge symmetry, neutrino masses and dark matter

被引：32

作者：

Chao, Wei ^{[1
]}

机构：

[1] Peking Univ, Ctr High Energy Phys, Beijing 1000871, Peoples R China

来源：

PHYSICS LETTERS B | 2011年 / 695卷 / 1-4期

基金：

中国国家自然科学基金;

关键词：

Neutrino masses; Lepton number; Dark matter; NUMBER; MODEL; OSCILLATIONS; VIOLATION; MIXINGS; SU(2); FIELD; PCAC;

D O I：

10.1016/j.physletb.2010.10.056

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A possible extension of the Standard Model to include lepton number as local gauge symmetry is investigated. In such a model, anomalies are canceled by two extra fermions doublet. After leptonic gauge symmetry spontaneously broken, three active neutrinos may acquire non-zero Majorana masses through the modified Type-II seesaw mechanism. Constraints on the model from electro-weak precision measurements are studied. Due to the Z(2) discrete flavor symmetry, right-handed Majorana neutrinos can serve as cold dark matter candidate of the Universe. Constraint from dark matter relic abundance is calculated. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：157 / 161

页数：5

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