A global analysis strategy to resolve neutrino NSI degeneracies with scattering and oscillation data
A global analysis strategy to resolve neutrino NSI degeneracies with scattering and oscillation data
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DOI：
10.1007/jhep09(2020)106
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发表时间：
2020-02
影响因子：
5.4
通讯作者：
B. Dutta;R. Lang;S. Liao;S. Sinha;L. Strigari;A. Thompson
中科院分区：
文献类型：
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作者：
B. Dutta;R. Lang;S. Liao;S. Sinha;L. Strigari;A. Thompson
中微子与第一代标准模型费米子的非标准相互作用（NSI）可以跨越大维度的参数空间，并表现出单类实验无法打破的简并性。振荡实验，连同中微子散射实验，可以将他们的观测结果合并成一个高度信息的数据集来解决这个问题。我们考虑将来自Borexino和相干实验的中微子-电子和中微子-核散射数据结合起来，包括对即将在CENNS-10液态氩探测器上进行的相干中微子散射测量的预测。我们将这些数据集扩展到NSI参数空间，并对未来多吨尺度暗物质探测器的中微子散射和未来在深地下中微子实验（DUNE）中大气中微子的振荡测量进行了预测。为了进行这种全局分析，我们采用了一种新的方法，即copula方法，该方法将来自不同实验的后验信息与一组大型的广义NSI参数结合起来。我们发现DUNE和暗物质探测器对Borexino和COHERENT拟合的贡献可以将电子和夸克NSI参数的约束提高2到3倍，即使在分析中有相对较多的NSI参数可以自由变化。
Neutrino non-standard interactions (NSI) with the first generation of standard model fermions can span a parameter space of large dimension and exhibit degeneracies that cannot be broken by a single class of experiment. Oscillation experiments, together with neutrino scattering experiments, can merge their observations into a highly informational dataset to combat this problem. We consider combining neutrino-electron and neutrino-nucleus scattering data from the Borexino and COHERENT experiments, including a projection for the upcoming coherent neutrino scattering measurement at the CENNS-10 liquid argon detector. We extend the reach of these data sets over the NSI parameter space with projections for neutrino scattering at a future multi-ton scale dark matter detector and future oscillation measurements from atmospheric neutrinos at the Deep Underground Neutrino Experiment (DUNE). In order to perform this global anal-ysis, we adopt a novel approach using the copula method, utilized to combine posterior information from different experiments with a large, generalized set of NSI parameters. We find that the contributions from DUNE and a dark matter detector to the Borexino and COHERENT fits can improve constraints on the electron and quark NSI parameters by up to a factor of 2 to 3, even when relatively many NSI parameters are left free to vary in the analysis.