Sterile neutrinos, coherent scattering, and oscillometry measurements with low-temperature bolometers
Sterile neutrinos, coherent scattering, and oscillometry measurements with low-temperature bolometers
复制标题
使用低温测辐射热计进行惰性中微子、相干散射和示波测量
DOI：
10.1103/physrevd.85.013009
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发表时间：
2011
影响因子：
5
通讯作者：
A. Anderson
中科院分区：
文献类型：
--
作者：
J. Formaggio;E. Figueroa;A. Anderson
相干中微子-核子散射提供了一个独特的方法，在寻找超越标准模型的物理。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。我们调查的灵敏度的阵列，这样的探测器中微子振荡到不育状态。最近对现有反应堆数据的分析似乎支持这样一个质量分裂为$的无菌中微子的存在。|Δ m_{\rm sterile}|在95% C. L时，混合强度为1.5 eV，混合强度为0.17 pm 0.08$。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。
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 $|\Delta m_{\rm sterile}|^2 \ge 1.5$ eV$^2$ and mixing strength of $\sin^2{2\theta_{\rm sterile}} = 0.17\pm 0.08$ 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.