用IceCube测量中微子振荡
Neutrino Oscillation Measurements with IceCube
摘要：
我们目前的中微子振荡分析的初步结果与冰立方22弦探测器在2007年和2008年收集的数据正在进行中。这项分析的目的是测量μ子中微子消失作为能量的函数，通过研究垂直向上的μ子中微子的直径的恒定基线长度的地球。在这个基线上，消失效应预计在中微子能量低于100 GeV时会变得相当大。这个能量范围以前没有用冰立方探索过，但是由于冰立方的垂直几何形状，对这类特定的事件有一定的敏感性。初步选择标准的基础上，我们表明，冰立方有可能检测到这些事件，我们估计的灵敏度，以确定振荡参数。
英文摘要：
We present preliminary results for a neutrino oscillation analysis in progress on data collected with the IceCube 22-string detector during 2007 and 2008. The goal of this analysis is to measure muon neutrino disappearance as a function of energy for a constant baseline length of the diameter of the Earth by studying vertically up-going muon neutrinos. At this baseline disappearance effects are expected to become sizable at neutrino energies below 100 GeV. This energy range has not been previously explored with IceCube, however due to IceCube's vertical geometry there is some sensitivity for this specific class of events. Based on preliminary selection criteria, we show that IceCube has the potential to detect these events and we estimate the sensitivity to determining oscillation parameters.
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