Seesaw neutrino mass and new U(1) gauge symmetry

被引：27

作者：

Adhikari, Rathin ^{[1
]}

Erler, Jens ^{[2
]}

Ma, Ernest ^{[3
]}

机构：

[1] Jamia Millia Islamia, Ctr Theoret Phys, New Delhi 110025, India

[2] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

[3] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

来源：

PHYSICS LETTERS B | 2009年 / 672卷 / 02期

关键词：

ELECTROWEAK PARAMETERS; PARITY NONCONSERVATION; PRECISE DETERMINATION; NUCLEON-SCATTERING; CONSTRAINTS; TRIPLET; MODEL;

D O I：

10.1016/j.physletb.2009.01.017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The three electroweak doublet neutrinos v(e,mu.tau) of the Standard Model may acquire small seesaw masses, using either three Majorana fermion singlets N or three Majorana fermion triplets (Sigma(+), Sigma(0), Sigma(-)). It is well known that the former accommodates the U(1) gauge symmetry B - L. It has also been shown some years ago that the latter supports a new U(1)(x) gauge symmetry. Here we study two variations of this U(1)(X), one for two N and one E, the other for one N and two Sigma. Phenomenological consequences are discussed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：136 / 140

页数：5

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