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arXiv 0711.0152astro-phhep-ph
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用km^3中微子望远镜解纠缠中微子-核子截面和高能中微子通量

Disentangling neutrino-nucleon cross section and high energy neutrino flux with a km^3 neutrino telescope

E. Borriello, A. Cuoco, G. Mangano, G. Miele, S. Pastor, O. Pisanti, P. D. Serpico

备注：
10 pages, 28 figures
发表信息：
Phys.Rev.D77:045019,2008
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摘要：

中微子望远镜中的能量-天顶角事件分布为同时测定极端运动学区域的中微子-核子截面和高能中微子通量提供了一种独特的工具。通过对通量和截面进行简单的参数化，我们给出了km ^3中微子望远镜的灵敏度分析。特别是，我们认为在NEMO网站放置的水下地中海望远镜的具体情况下，虽然我们的大部分结果也适用于冰下探测器，如冰立方。我们确定的灵敏度偏离标准值的截面以上1 PeV，可以独立探测从先验知识的归一化和能量依赖的通量。我们还强调，在PeV范围内标记下行中微子簇射的能力对宇宙射线引起的背景穿透μ子似乎是一个至关重要的要求，以获得有意义的约束的截面。

英文摘要：

The energy--zenith angular event distribution in a neutrino telescope provides a unique tool to determine at the same time the neutrino-nucleon cross section at extreme kinematical regions, and the high energy neutrino flux. By using a simple parametrization for fluxes and cross sections, we present a sensitivity analysis for the case of a km^3 neutrino telescope. In particular, we consider the specific case of an under-water Mediterranean telescope placed at the NEMO site, although most of our results also apply to an under-ice detector such as IceCube. We determine the sensitivity to departures from standard values of the cross sections above 1 PeV which can be probed independently from an a-priori knowledge of the normalization and energy dependence of the flux. We also stress that the capability to tag downgoing neutrino showers in the PeV range against the cosmic ray induced background of penetrating muons appears to be a crucial requirement to derive meaningful constraints on the cross section.

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