Admixture of quasi-Dirac and Majorana neutrinos with tri-bimaximal mixing
Admixture of quasi-Dirac and Majorana neutrinos with tri-bimaximal mixing
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DOI：
10.1016/j.physletb.2011.06.024
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发表时间：
2011-04
影响因子：
4.4
通讯作者：
S. Morisi;E. Peinado
中科院分区：
文献类型：
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作者：
S. Morisi;E. Peinado
我们提出了最近提出的所谓双峰/精神分裂模型的实现。我们假设 S 4，四个对象的排列群作为味道对称性，给出主序的三双极大轻子混合。在这些模型中，第二个大质量中微子态被假定为准狄拉克态，其余中微子是马约拉纳态。在逆质量等级的情况下，无中微子双β衰变参数me的下界大约是通常下界的两倍，在下一代实验的灵敏度范围内。
We propose a realization of the so-called bimodal/schizophrenic model proposed recently. We assume S 4, the permutation group of four objects as flavor symmetry giving tri-bimaximal lepton mixing at leading order. In these models the second massive neutrino state is assumed quasi-Dirac and the remaining neutrinos are Majorana states. In the case of inverse mass hierarchy, the lower bound on the neutrinoless double beta decay parameter m e e is about two times that of the usual lower bound, within the range of sensitivity of the next generation of experiments.