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On the non-detection of Glashow resonance in IceCube
Journal of High Energy Astrophysics ( IF 3.8 ) Pub Date : 2018-02-02 , DOI: 10.1016/j.jheap.2018.01.003
Sarira Sahu , Bing Zhang

Electron anti-neutrinos at the Glashow resonance (GR, at Eν¯e6.3 PeV) have an enhanced probability to be detected. With three neutrinos detected by IceCube in the (1–2) PeV energy range at present, one would expect that about 1 to 4 GR ν¯e should have been detected. The high-energy ∼8.7 PeV muon neutrino detected by IceCube may not be a GR event. If so, we expect to detect 50 to 70 GR ν¯e, then one would have a “missing Glashow-resonance problem”. This would suggest (1) that interaction rather than pp interaction is the dominant channel to produce the observed IceCube high-energy neutrinos; (2) that multi-pion interactions are suppressed; and (3) that the magnetic field and photon energy density in the emission region is such that significant μ+ cooling occurs before decaying, yet π+'s essentially do not cool before decaying.



中文翻译:

关于在IceCube中未检测到Glashow共振

电子反中微子在Glashow共振(GR,at Ëν¯Ë6.3PeV)的概率更高。目前,IceCube在(1-2)PeV能量范围内检测到3个中微子,人们可以预期大约有1至4 GRν¯Ë应该已经被检测到。IceCube检测到的高能量〜8.7 PeV的μ子中微子可能不是GR事件。如果是这样,我们预计将检测到50到70 GRν¯Ë,那么就会有一个“缺少Glashow共振问题”。这表明(1)相互作用而不是pp相互作用是产生观察到的IceCube高能中微子的主要渠道;(2)抑制了多pionpγ相互作用;(3)发射区域的磁场和光子能量密度非常大μ+ 冷却发生在腐烂之前 π+在腐烂之前基本上不冷却。

更新日期:2018-02-02
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