A consistent three-flavour approach to possible evidence of neutrino oscillations

被引：48

作者：

Fogli, GL

Lisi, E

Montanino, D

机构：

[1] DIPARTIMENTO FIS,BARI,ITALY

[2] IST NAZL FIS NUCL,SEZ BARI,I-70126 BARI,ITALY

来源：

ASTROPARTICLE PHYSICS | 1995年 / 4卷 / 02期

关键词：

D O I：

10.1016/0927-6505(95)00024-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We thoroughly analyse the interplay of the two possible indications of neutrino masses and mixing - the solar nu-deficit and the atmospheric nu-anomaly - and their compatibility with the negative results of oscillation searches at accelerators and reactors. First, world neutrino data - with the exception of upward-going muons and multi-GeV atmospheric nu's are analysed in a three-flavour oscillation framework, characterized by an extremized form of the natural neutrino mass hierarchy. A set of solutions is found in the neutrino mass/mixing parameter space. Then these solutions are shown to be stable by means of a perturbative-like approach, leading to a definitely reasonable and consistent hierarchical scenario. Solar and Earth matter effects on neutrino propagation are accurately taken into account in both steps of the analysis. Finally, the recent Kamiokande results on the atmospheric nu(mu)/nu(e) ratio in the multi-GeV energy range are compared with our fits of non-solar nu data. The impressive agreement reinforces out oscillation scenario.

引用

页码：177 / 188

页数：12

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