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arXiv 1606.04517hep-phastro-ph.COastro-ph.HE
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IceCube的重右手中微子暗物质和PeV中微子

Heavy right-handed neutrino dark matter and PeV neutrinos at IceCube

P. S. Bhupal Dev, D. Kazanas, R. N. Mohapatra, V. L. Teplitz, Yongchao Zhang

摘要:

我们讨论了一个简单的非超对称模型的基础上的电弱规范群$SU(2)_L\times SU(2)^\prime\times U(1)_{B-L}$最轻的右手中微子,这是轻子的$SU(2)_L\times SU(2)^\prime\times U(1)_{B-L}$的双峰的一部分,发挥作用的长期不稳定的暗物质的质量在多PeV的范围。我们使用共振$s$通道湮灭来获得正确的热遗迹密度,并放松暗物质质量的么正性约束。在这个模型中,存在一个产生τ轻子和中微子的三体暗物质衰变模式,这可能是冰立方实验中观察到的PeV级联事件的来源。该模型可以在未来的数据中用更精确的最高能量中微子事件的味道信息进行测试。

英文摘要:

We discuss a simple non-supersymmetric model based on the electroweak gauge group $SU(2)_L\times SU(2)^\prime\times U(1)_{B-L}$ where the lightest of the right-handed neutrinos, which are part of the leptonic doublet of $SU(2)^\prime$, play the role of a long-lived unstable dark matter with mass in the multi-PeV range. We use a resonant $s$-channel annihilation to obtain the correct thermal relic density and relax the unitarity bound on dark matter mass. In this model, there exists a 3-body dark matter decay mode producing tau leptons and neutrinos, which could be the source for the PeV cascade events observed in the IceCube experiment. The model can be tested with more precise flavor information of the highest-energy neutrino events in future data.

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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