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arXiv 2007.07866hep-phastro-ph.HE
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(超)高能中微子中由于活动-无菌秘密相互作用的可观测特征

Observable features in (ultra)high energy neutrinos due to active-sterile secret interactions

Damiano F. G. Fiorillo, Stefano Morisi, Gennaro Miele, Ninetta Saviano

摘要:

我们考虑了一种新的赝标粒子介导的活性无菌秘密中微子相互作用对高能和超高能中微子通量的影响。特别是,我们专注于3个活性和1个无菌中微子的情况下耦合的味道依赖的相互作用,扩展的情况下,1个活性和1个无菌中微子,我们最近检查。我们发现,根据无菌中微子与活动部门的相互作用的种类,新的区域的参数空间的秘密相互作用,现在允许导致有趣的现象学影响的两个基准通量,我们认为,即天体物理幂律通量,在低于100 PeV的范围内,和宇宙起源通量,在超高能量范围。首先,最终的有效通量可以在未来的实验中观察到可测量的损耗。特别是,在只有τ中微子相互作用的情况下,我们发现对天体物理幂律通量的影响可以如此之大,以至于已经被IceCube实验探测到。此外,我们发现风味比的能量依赖性具有有趣的特征。

英文摘要:

We consider the effects of active-sterile secret neutrino interactions, mediated by a new pseudoscalar particle, on high- and ultra high-energy neutrino fluxes. In particular, we focus on the case of 3 active and 1 sterile neutrino coupled by a flavor dependent interaction, extending the case of 1 active and 1 sterile neutrino we have recently examined. We find that, depending on the kind of interaction of sterile neutrino with the active sector, new regions of the parameter space for secret interactions are now allowed leading to interesting phenomenological implications on two benchmark fluxes we consider, namely an astrophysical power law flux, in the range below 100 PeV, and a cosmogenic flux, in the Ultrahigh energy range. First of all, the final active fluxes can present a measurable depletion observable in future experiments. Especially, in the case of only tau neutrino interacting, we find that the effects on the astrophysical power law flux can be so large to be already probed by the IceCube experiment. Moreover, we find intriguing features in the energy dependence of the flavor ratio.

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