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arXiv 0910.0215astro-ph.HE
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用IceCube寻找大气中的中子感生级联

A Search For Atmospheric Neutrino-Induced Cascades with IceCube

Michelangelo D'Agostino

摘要:

冰立方探测器是一个全方位的中微子望远镜。几年来,冰立方一直在探测冰中带电μ子中微子相互作用的μ子轨迹。然而,冰立方还没有观测到由带电或中性流中微子相互作用引发的电磁或强子粒子簇射或“级联”。第一次探测到这样的事件签名可能来自已知的大气电子和μ子中微子通量。利用一整年的冰立方数据对大气中微子诱发的级联进行了搜索。重建和背景抑制技术的发展,以达到第一次,预期的信号与背景比~1或更好。

英文摘要:

The IceCube detector is an all-flavor neutrino telescope. For several years IceCube has been detecting muon tracks from charged-current muon neutrino interactions in ice. However, IceCube has yet to observe the electromagnetic or hadronic particle showers or "cascades" initiated by charged or neutral-current neutrino interactions. The first detection of such an event signature will likely come from the known flux of atmospheric electron and muon neutrinos. A search for atmospheric neutrino-induced cascades was performed using a full year of IceCube data. Reconstruction and background rejection techniques were developed to reach, for the first time, an expected signal-to-background ratio ~1 or better.

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。

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