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下一代博洛米特式双贝塔衰变实验的灵敏度挑战

Long Ma¹, Huan-Zhong Huang^1,2, Yu-Gang Ma¹

¹Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China.

Research (Washington, D.C.)

|December 20, 2024

概括

无中微子双β衰变的搜索使用了冷晶体的博洛米. 未来的升级旨在显著减少背景,并提高发现Majorana中微子的灵敏度.

科学领域:

粒子物理学粒子物理学
核物理核物理核物理
实验物理实验物理学

背景情况:

低温晶体球计对于无中微子双β (0νββ) 衰变的搜索至关重要,这是确定中微子Majorana性质的关键过程.
CUORE (Cryogenic Underground Observatory for Rare Events) 实验,一个尺度的玻利米度探测器,已经证明了玻利米度技术对0νββ研究的有效性.
计划中的CUPID项目旨在通过使用闪的晶体和双读数来减少背景来提高灵敏度,以减轻α粒子事件.

研究的目的:

讨论未来技术开发的战略,以提高无中子双β衰变搜索中的实验灵敏度.
解决技术挑战,进一步提高探测能力,探索反向中微子质量层次的探测.
概述通往可能发现Majorana中微子的途径.

主要方法:

使用闪的晶体来区分信号和背景事件.
实施双读取技术,以改进事件识别和背景拒绝.
利用冷晶体博洛米特技术,用于高灵敏度的罕见事件检测.

主要成果:

CUORE取得了显著的成功,并证明了玻利米技术在0βββ衰变研究中的优势.
通过先进的探测器技术,CUPID项目提出了大幅减少背景.
进一步的技术进步是必要的,以充分探索中微子质量区域,并可能发现Majorana中微子.

结论:

低温博洛米特是寻找罕见事件的必不可少的工具,如0νββ衰变.
CUPID项目代表了在背景减少和对0νββ实验的敏感性方面迈出的重要一步.
探测器技术的持续创新对于未来的中微子物理学发现和确定中微子质量层次是至关重要的.

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