将河外中微子通量极限与中微子传播极限混淆
Confusing the extragalactic neutrino flux limit with a neutrino propagation limit
摘要：
我们研究了河外中微子流在传播过程中由于非标准相互作用而可能受到的抑制。特别地，我们研究了中微子与超轻标量场暗物质的相互作用。结果表明，这种相互作用可能会抑制河外中微子流，从而导致一种新的机制，以减少超高能中微子流。我们研究的情况下，非自共轭以及自共轭暗物质。在第一种情况下，这种抑制与中微子和暗物质的质量无关。我们的结论是，必须小心解释时，限制中微子通量仅通过源加速机制，因为可能有其他机制的中微子通量的减少。
英文摘要：
We study the possible suppression of the extragalactic neutrino flux due to a nonstandard interaction during its propagation. In particular, we study neutrino interaction with an ultra-light scalar field dark matter. It is shown that the extragalactic neutrino flux may be suppressed by such an interaction, leading to a new mechanism to reduce the ultra-high energy neutrino flux. We study both the cases of non-self-conjugate as well as self-conjugate dark matter. In the first case, the suppression is independent of the neutrino and dark matter masses. We conclude that care must be taken when explaining limits on the neutrino flux through source acceleration mechanisms only, since there could be other mechanisms for the reduction of the neutrino flux.
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