A minimal three generation see-saw scenario for LSND

被引：12

作者：

Brahmachari, B

Choubey, S

Mohapatra, RN

机构：

[1] Saha Inst Nucl Phys, Theoret Phys Grp, Kolkata 700064, India

[2] Univ Southampton, Dept Phys & Astron, Southampton S017 1BJ, Hants, England

[3] Univ Maryland, Dept Phys & Astron, College Pk, MD 20742 USA

来源：

PHYSICS LETTERS B | 2002年 / 536卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(02)01826-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that in the minimal three generation see-saw models for neutrinos, the presence of leptonic (L-e + L-mu - L-tau) x S-2 symmetry leads to one of the right handed neutrinos remaining massless. This state can then be identified with the sterile neutrino required for a simultaneous understanding of solar, atmospheric and LSND observations. We present a gauge model where the presence of higher-dimensional operators originating from Planck scale physics lead to a realistic 2 + 2 mixed scenario that fits all oscillation data. The model predicts a range for the mixing angle U-e3 and an effective mass for neutrinos emitted in tritium decay, which can be used to test this model. (C) 2002 Published by Elsevier Science B.V.

引用

页码：94 / 100

页数：7

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