Probing Majorana neutrinos in the regime of the normal mass hierarchy
Probing Majorana neutrinos in the regime of the normal mass hierarchy
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DOI：
10.1103/physrevd.87.071301
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发表时间：
2013-04
影响因子：
5
通讯作者：
S. Biller
中科院分区：
文献类型：
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作者：
S. Biller
提出了一种开发可行的无中微子双β衰变实验的方法，该实验能够探测非简并正常中微子质量等级体系中的马约拉纳质量。对于此类实验，本研究表明 130Te 可能是候选同位素的最佳选择，而负载金属的液体闪烁体可能代表探测器技术的最佳选择。提出了对所需负载、闪烁体特性和探测器配置的评估。虽然需要进一步开发载碲液体闪烁体，但该领域的最新进展表明这项任务可能并非不可完成。这可能为未来的实验打开大门，其灵敏度无与伦比，可容纳 10-20 千吨的体积。据我们所知，这是第一次提出一种潜在实用的实验方法来探索非简并正常等级中的马约拉纳中微子质量。
An approach to developing a feasible neutrinoless double beta decay experiment capable of probing Majorana masses in the regime of the nondegenerate normal neutrino mass hierarchy is proposed. For such an experiment, this study suggests that 130Te is likely the best choice of candidate isotope and that metal-loaded liquid scintillator likely represents the best choice of detector technology. An evaluation of the required loading, scintillator properties and detector configuration is presented. While further development of Te-loaded liquid scintillator is required, recent progress in this area suggests that this task may not be insurmountable. This could open the door for a future experiment of unparalleled sensitivity that might be accommodated in a volume of the order of 10-20 kilotons. To the best of our knowledge, this is the first time that a potentially practical experimental approach to exploring Majorana neutrino masses in the nondegenerate normal hierarchy has been suggested.