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arXiv 0811.0345hep-ph
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S4作为轻子混合的自然味对称

S4 as a natural flavor symmetry for lepton mixing

Federica Bazzocchi, Stefano Morisi

摘要:

群论的论点似乎表明离散对称性S4作为最小的味道对称性与tribimmaximal中微子混合兼容。我们以一种与模型无关的方式证明了S4确实可以通过不同的对称破缺模式实现精确的三重极大混合。我们提出了两种模型,轻子tribimalamentals混合实现不同的方式,并为每一个我们讨论的超势,导致正确的味道对称性的破坏。

英文摘要:

Group theoretical arguments seem to indicate the discrete symmetry S4 as the minimal flavour symmetry compatible with tribimaximal neutrino mixing. We prove in a model independent way that indeed S4 can realize exact tribimaximal mixing through different symmetry breaking patterns. We present two models in which lepton tribimaximal mixing is realized in different ways and for each one we discuss the superpotential that leads to the correct breaking of the flavor symmetry.

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