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arXiv 0907.3109hep-ph
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反三双峰III型跷跷板与轻子味破坏

Inverse tri-bimaximal type-III seesaw and lepton flavor violation

D. Ibanez, S. Morisi, J. W. F. Valle

摘要:

我们提出了一个III型版本的反跷跷板,或相当于III型跷跷板的反版本。自然小中微子质量产生于低尺度的中性费米子交换,转化为超荷SU(2)三重态。为了实现三双极大轻子混合,我们在最小SU(3)xSU(2)xU(1)规范对称性基础上补充了A4味对称性.我们的方案诱导轻子味违反(LFV)三体衰变,可以在树水平进行,而辐射锂到lj伽马衰变和μ-e转换的核也预计是相当大的。LFV衰变与潜在的味对称性有关,新的费米子也有望在大型强子对撞机(LHC)上进行研究。

英文摘要:

We present a type-III version of inverse seesaw or, equivalently an inverse version of type-III seesaw. Naturally small neutrino masses arise at low-scale from the exchange of neutral fermions transforming as hyperchargeless SU(2) triplets. In order to implement tri-bimaximal lepton mixing we supplement the minimal SU(3)xSU(2)xU(1) gauge symmetry with an A4-based flavor symmetry. Our scenario induces lepton flavour violating (LFV) three body decays that can proceed at the tree level, while radiative li to lj gamma decays and mu-e conversion in nuclei are also expected to be sizeable. LFV decays are related by the underlying flavor symmetry and the new fermions are also expected to be accessible for study at the Large Hadron Collider (LHC).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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