arXiv 1404.06222014-04hep-phastro-ph.HEhep-th

宇宙中微子能谱的终结

End of the cosmic neutrino energy spectrum

L. A. Anchordoqui, V. Barger, H. Goldberg, J. G. Learned, D. Marfatia, S. Pakvasa, T. C. Paul, T. J. Weiler

备注：: 6 pages. Version to appear in PLB
发表信息：: Phys.Lett.B739:99-101,2014
DOI：: 10.1016/j.physletb.2014.10.037

摘要：

冰立方数据中可能存在中微子事件的高能截止。特别是，冰立方没有观察到超过2 PeV的连续事件，或标准模型Glashow共振事件预计在6.3 PeV。在ANITA和俄歇实验中也没有更高能量的中微子信号。这种高能中微子事件的缺乏激发了对中微子能量超过几个PeV的基本限制。我们假设一个简单的方案，终止中微子光谱是违反洛伦兹不变性，但限制中微子速度总是小于光速。如果中微子的极限速度也适用于与其相关的带电轻子，那么一个重要的结果是，带电π介子的两体衰变模式在超过最大中微子能量的两倍时被禁止，而辐射衰变模式在更高的能量时被抑制。这种稳定的π介子可以作为宇宙射线的原色。

英文摘要：

There may be a high-energy cutoff of neutrino events in IceCube data. In particular, IceCube does not observe either continuum events above 2 PeV, or the Standard Model Glashow-resonance events expected at 6.3 PeV. There are also no higher energy neutrino signatures in the ANITA and Auger experiments. This absence of high-energy neutrino events motivates a fundamental restriction on neutrino energies above a few PeV. We postulate a simple scenario to terminate the neutrino spectrum that is Lorentz-invariance violating, but with a limiting neutrino velocity that is always smaller than the speed of light. If the limiting velocity of the neutrino applies also to its associated charged lepton, then a significant consequence is that the two-body decay modes of the charged pion are forbidden above two times the maximum neutrino energy, while the radiative decay modes are suppressed at higher energies. Such stabilized pions may serve as cosmic ray primaries.

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。

摘要：

英文摘要：

相关论文