未来百万吨级水切伦科夫探测器中质子径迹识别的物理影响
The physics impact of proton track identification in future megaton-scale water Cherenkov detectors
摘要：
在本文中，我们调查的影响，在未来的兆吨级水切伦科夫探测器识别质子切伦科夫环。我们估计的预期事件率检测中性电流和带电电流准弹性中微子相互作用的大气中微子在兆吨级的超级神冈探测器与40%和20%的光阴极覆盖。利用这个样品，我们研究了测量中微子振荡模式和寻找不育中微子的前景。我们还确定了选定的带电电流准弹性样品的大小在300千吨的基准量超神冈的检测器从传统的超级光束和β-光束的例子中提出的文献。通过这些样本，证明了使用出射质子进行完整的运动学中微子重建可以提高重建的能量分辨率，并提供良好的中微子与反中微子标记能力，为未来项目中的水切伦科夫探测器增加了重要的能力。我们确定必要的光束参数，利用这种技术和中微子和反中微子选择效率的分布。
英文摘要：
In this paper, we investigate the impact in future megaton-scale water Cherenkov detectors of identifying proton Cherenkov rings. We estimate the expected event rates for detected neutral current and charged current quasi-elastic neutrino interactions from atmospheric neutrinos in a megaton-scale Super-Kamiokande-like detector with both 40% and 20% photo-cathode coverage. With this sample we examine the prospects for measuring the neutrino oscillation pattern, and searching for sterile neutrinos. We also determine the size of selected charged current quasi-elastic samples in a 300-kton fiducial volume Super-Kamiokande-like detector from examples of both conventional super-beams and beta-beams proposed in the literature. With these samples, it is shown that full kinematic neutrino reconstruction using the outgoing proton can improve the reconstructed energy resolution, and give good neutrino versus anti-neutrino tagging capabilities, adding important capabilities to water Cherenkov detectors in future projects. We determine the beam parameters necessary to make use of this technique and present distributions of neutrino and anti-neutrino selection efficiencies.
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