为什么是头？
Why Tau First?
摘要：
电子中微子是上个世纪第一个被预见和发现的中性轻子。无序的μ子和它的中微子后来由宇宙射线产生。1975年，人们惊奇地发现了最重、最不稳定的带电轻子--tau。它的中微子在2000年才刚刚被发现。那么，为什么高能中微子天文学应该首先通过τ中微子，最后，最罕见的一个？原因是基于过去十年发现的三个有利巧合：中微子质量及其味道混合，宇宙黑体上的UHECR不透明度（BBR上的GZK截止），放大的tau空气簇射在飞行中衰减。事实上，保证UHE GZK τ中微子，通过μ子混合喂养，而掠过地球可能会导致UHE τ增强，主要是水平的。这些UHE轻子衰变在飞行中传播，放大，无噪音空气淋浴：一个独特的粒子的巨大事件。不久将被观察到：在俄歇天空中，在本世纪。它的发现可能标志着第一个tau的出现。
英文摘要：
Electron neutrino has been the first neutral lepton to be foreseen and discovered last century. The un-ordered muon and its neutrino arose later by cosmic rays. The tau discover, the heaviest, the most unstable charged lepton, was found surprisingly on 1975. Its neutrino was hardly revealed just on 2000. So why High Energy Neutrino Astronomy should rise first via tau neutrino, the last, the most rare one? The reasons are based on a chain of three favorable coincidences found last decade: the neutrino masses and their flavor mixing, the UHECR opacity on Cosmic Black Body (GZK cut off on BBR), the amplified tau air-shower decaying in flight. Indeed guaranteed UHE GZK tau neutrinos, feed by muon mixing, while skimming the Earth might lead to boosted UHE tau, mostly horizontal ones. These UHE lepton decay in flight are spread, amplified, noise free Air-Shower: a huge event for an unique particle. To be observed soon: within Auger sky, in present decade. Its discover may sign of the first tau appearance.
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。
