Neutrino mass hierarchy and the origin of leptonic flavor mixing from the right-handed sector
Neutrino mass hierarchy and the origin of leptonic flavor mixing from the right-handed sector
复制标题
中微子质量等级和右手部门轻子风味混合的起源
DOI：
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复制
发表时间：
2011
期刊：
影响因子：
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通讯作者：
H. Pas
中科院分区：
文献类型：
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作者：
P. Leser;H. Pas
我们考虑一个中微子质量模型，其中所有轻子混合是由一个沉重的Majorana部门通过跷跷板I型机制，而狄拉克质量矩阵是对角的。这种模式在大统一理论中自然出现。模型的参数上的约束被认为是一个正常的中微子质量等级是首选。最轻的中微子质量通常很小，导致在正常等级情况下无法观测到无中微子双β衰变率。
We consider a neutrino mass model where all leptonic mixing is induced by a heavy Majorana sector through the seesaw type I mechanism, while the Dirac mass matrices are diagonal. Such a pattern occurs naturally in grand unified theories. Constraints on the parameters of the models are considered and it is shown that a normal neutrino mass hierarchy is preferred. The lightest neutrino mass is typically small, leading to nonobservable rates for neutrinoless double beta decay in the normal hierarchy case.