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arXiv 0903.3199hep-ph
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三双峰中微子混合与$θ_{13}$

Tri-bimaximal Neutrino Mixing and $θ_{13}$

S. F. King

摘要:

我们提出了一个扩展的三双峰混合,包括一个非零的反应器角$θ_{13}$,同时保持大气角$θ_{23}=45^o$和太阳角$θ_{12}=35^o$的三双峰预测。我们展示了如何这样的三双极大反应器混合可以出现在领先的顺序从(I型)跷跷板机制与部分约束顺序的优势。在具有非阿贝尔离散族对称性的大统一模型中,如$A_4$,部分受约束的顺序优势可以被具有特定真空排列的黄酮自发破缺。

英文摘要:

We propose an extension of tri-bimaximal mixing to include a non-zero reactor angle $θ_{13}$ while maintaining the tri-bimaximal predictions for the atmospheric angle $θ_{23}=45^o$ and solar angle $θ_{12}=35^o$. We show how such tri-bimaximal-reactor mixing can arise at leading order from the(type I) see-saw mechanism with partially constrained sequential dominance. Partially constrained sequential dominance can be realized in GUT models with a non-Abelian discrete family symmetry, such as $A_4$, spontaneously broken by flavons with a particular vacuum alignment.

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