| Geometry of the effective Majorana neutrino mass in the 0νββ decay |
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| 作者姓名： | 邢志忠 周也铃 |
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| 作者单位： | 1 Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918, Beijing 100049, China;;2 Center for High Energy Physics, Peking University, Beijing 100080, China |
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| 摘 要： | The neutrinoless double-beta (0νββ) decay is a unique process used to identify the Majorana nature of massive neutrinos, and its rate depends on the size of the effective Majorana neutrino mass ee. We put forward a novel ‘coupling-rod’ diagram to describe ee in the complex plane, by which the effects of the neutrino mass ordering and CP-violating phases on ee are intuitively understood. We show that this geometric language allows us to easily obtain the maximum and minimum of |ee|. It remains usable even if there is a kind of new physics contributing to ee, and it can also be extended to describe the effective Majorana masses eμ, eτ, μμ, μτ and ττ which may appear in some other lepton-number violating processes.
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| 关 键 词： | Majorana particles neutrino mass 0νββ decay |
| 收稿时间： | 2014-06-03 |
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| 点击此处可从《中国物理 C》浏览原始摘要信息 |
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