用低温测辐射热计测量惰性中微子、相干散射和振荡计
Sterile Neutrinos, Coherent Scattering and Oscillometry Measurements with Low-temperature Bolometers
摘要：
相干中微子-核子散射提供了一个独特的方法，在寻找物理学超越标准模型。当与单能中微子源结合使用时，该技术可以对轻无菌中微子的存在敏感。由于检测所需的极低能量阈值（10-50 eV），过去利用此类反应的能力受到限制。在本文中，我们讨论了低温固态测辐射热计，使达到极低的动能阈值的优化。我们研究了这种探测器阵列对中微子振荡到无菌态的灵敏度。最近对现有反应堆数据的分析似乎支持这样一种无菌中微子的存在，其质量分裂为$|Δm_{\rm sterile}|^2 \ge 1.5$ eV $^2$，混合强度为$\sin^2{2θ_{\rm sterile}} = 0.17\pm 0.08$（95% C. L）。一系列这样的低阈值探测器将能够对解释的有效性作出明确的声明。
英文摘要：
Coherent neutrino-nucleon scattering offers a unique approach in the search for physics beyond the Standard Model. When used in conjunction with mono-energetic neutrino sources, the technique can be sensitive to the existence of light sterile neutrinos. The ability to utilize such reactions has been limited in the past due to the extremely low energy threshold (10-50 eV) needed for detection. In this paper, we discuss an optimization of cryogenic solid state bolometers that enables reaching extremely low kinetic energy thresholds. We investigate the sensitivity of an array of such detectors to neutrino oscillations to sterile states. A recent analysis of available reactor data appears to favor the existence of such such a sterile neutrino with a mass splitting of $|Δm_{\rm sterile}|^2 \ge 1.5$ eV$^2$ and mixing strength of $\sin^2{2θ_{\rm sterile}} = 0.17\pm 0.08$ at 95% C.L. An array of such low-threshold detectors would be able to make a definitive statement as to the validity of the interpretation.
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