Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA.
Phys Rev Lett. 2013 Apr 26;110(17):171802. doi: 10.1103/PhysRevLett.110.171802.
There has been some concern about the unexpected paucity of cosmic high-energy muon neutrinos in detectors probing the energy region beyond 1 PeV. As a possible solution we consider the possibility that some exotic neutrino property is responsible for reducing the muon neutrino flux at high energies from distant sources; specifically, we consider (i) neutrino decay and (ii) neutrinos being pseudo-Dirac-particles. This would provide a mechanism for the reduction of high-energy muon events in the IceCube detector, for example.
人们对在探测 1PeV 以上能区的探测器中探测到的宇宙高能μ中微子出乎意料的缺乏表示担忧。作为一种可能的解决方案，我们考虑了一种可能性，即某种奇异的中微子性质可能导致来自遥远源的高能μ中微子通量减少；具体来说，我们考虑了(i) 中微子衰变和(ii) 中微子是赝狄拉克粒子。这将为例如 IceCube 探测器中高能μ事件的减少提供一种机制。
