论文标题
对新物理学的相干数据和应用的统计分析
A Statistical Analysis of the COHERENT Data and Applications to New Physics
论文作者
论文摘要
2017年连贯协作的相干弹性中微子核散射（CE $ν$ ns）的观察为在相对较低的能量下的测试标准模型预测开辟了一个新窗口，并探测了新的物理情况。但是，我们的调查表明，对用于分析数据的统计方法的仔细处理对于得出对新物理参数的正确约束和界限至关重要。在本手稿中，我们对使用所有可用背景数据的公开可用的CSI数据进行了详细分析。我们指出，在一般而言，Wilks的定理并未实现，并且必须按照Feldman-Cousins程序对蒙特卡洛模拟进行置信区域的计算。作为该方法测试新物理场景的必要性的一个例子，我们量化了具有中微子非标准相互作用的几种场景的允许范围。此外，我们提供随附的代码，以实现其他新物理方案以及结果的数据文件。
The observation of coherent elastic neutrino nucleus scattering (CE$ν$NS) by the COHERENT collaboration in 2017 has opened a new window to both test Standard Model predictions at relatively low energies and probe new physics scenarios. Our investigations show, however, that a careful treatment of the statistical methods used to analyze the data is essential to derive correct constraints and bounds on new physics parameters. In this manuscript we perform a detailed analysis of the publicly available COHERENT CsI data making use of all available background data. We point out that Wilks' theorem is not fulfilled in general and a calculation of the confidence regions via Monte Carlo simulations following a Feldman-Cousins procedure is necessary. As an example for the necessity of this approach to test new physics scenarios we quantify the allowed ranges for several scenarios with neutrino non-standard interactions. Furthermore, we provide accompanying code to enable an easy implementation of other new physics scenarios as well as data files of our results.
