论文标题
揭开$0νβ$衰减机制
Unraveling the $0νββ$ Decay Mechanisms
论文作者
论文摘要
我们讨论了在有效的田间理论框架中产生的中微子双β衰减不同机制之间区分不同机制的可能性。在对特定歧视方式的审查和详细研究之后，我们得出结论，可以通过测量相距可观察到的相互观察和使用不同同位素获得的衰减速率的测量，将32个不同的低能量有效算子分为多个组。这不仅需要实质性的实验精度，而且还需要对基础核物理学当前理论知识的显着改善。具体而言，我们方法中的限制方面证明是当前未知或不确定的低能常数值。除了采用有效的现场理论语言的研究外，我们还研究了几种典型的紫外线模型。
We discuss the possibilities of distinguishing among different mechanisms of neutrinoless double beta decay arising in the effective field theory framework. Following the review and detailed investigation of the particular ways of discrimination, we conclude that the 32 different low-energy effective operators can be split into multiple groups that are in principle distinguishable from each other by measurements of the phase-space observables and by comparison of the decay rates obtained using different isotopes. This would require not only a substantial experimental precision but necessarily also a considerable improvement of the current theoretical knowledge of the underlying nuclear physics. Specifically, the limiting aspect in our approach turns out to be the currently unknown or uncertain values of low-energy constants. Besides the study adopting the effective field theory language we also look into several typical UV models.
