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arXiv 1502.07032hep-ph
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$S_4$ Flavor对称额外U(1)模型中的PeV标度右手中微子暗物质

PeV Scale Right Handed Neutrino Dark Matter in $S_4$ Flavor Symmetric extra U(1) model

Yasuhiro Daikoku, Hiroshi Okada

摘要:

最近在IceCube实验中对高能中微子的观测表明,在PeV以上存在超重暗物质。假设暗物质是最重的右手中微子,我们确定中微子的母粒子是两个简并的右手中微子。$O(V_{cb})\sim O(10^{-2})$味对称性破缺解释了右手中微子的$O(10^{-4})$质量简并,这是一个相当大的尺度来解释在PeV尺度下成功的共振瘦生。与此同时,最重的右手中微子的非热产生为$T_{RH}\sim 10$ PeV提供了适量的暗物质。味对称性的足迹被留在额外的希格斯多重态和有色希格斯多重态的简并质谱中,这可能是LHC或未来的对撞机测试。

英文摘要:

Recent observation of high energy neutrino in IceCube experiment suggests existence of superheavy dark matter beyond PeV. We identify the parent particles of neutrino as two degenerated right handed neutrinos, assuming the dark matter is the heaviest right handed neutrino. The $O(V_{cb})\sim O(10^{-2})$ flavor symmetry breaking accounts for the $O(10^{-4})$ mass degeneracy of right handed neutrinos which is a sizable scale to explain the successful resonant leptogenesis at the PeV scale. At the same time, non-thermal production of the heaviest right handed neutrino gives the right amount of dark matter for $T_{RH}\sim 10$PeV. The footprint of flavor symmetry is left in degenerated mass spectra of extra Higgs multiplet and colored Higgs multiplet which may be testable for LHC or future colliders.

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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