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arXiv 0712.2690hep-ph
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无中微子双β衰变的重要性

Importance of neutrinoless double beta decay

Utpal Sarkar

摘要:

中微子质量小的一个自然解释要求它们是违反轻子数两个单位的马约拉纳粒子。由于轻子数破缺在粒子物理和宇宙学中会产生一些有趣的结果,因此研究自然界中是否存在轻子数破缺及其大小是非常重要的。无中微子双β衰变实验可以回答这些问题:是否存在轻子数破坏,中微子是否是马约拉纳粒子。此外,无中微子双β衰变的大小将限制任何其他轻子数破坏过程。这种轻子数破坏也可能与宇宙的物质-反物质不对称性、暗物质和宇宙学常数有关。

英文摘要:

A natural explanation for the smallness of the neutrino mass requires them to be Majorana particles violating lepton number by two units. Since lepton number violation can have several interesting consequences in particle physics and cosmology, it is of utmost importance to find out if there is lepton number violation in nature and what is its magnitude. The neutrinoless double beta decay experiment can answer these questions: if there is lepton number violation and if neutrinos are Majorana particles. In addition, the magnitude of neutrinoless double beta decay will constrain any other lepton number violating processes. This lepton number violation may also be relatd to the matter-antimatter asymmetry of the universe, dark matter and cosmological constant.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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