论文标题
如果缺少特定的中性s中性beta衰减怎么办
What if a specific neutrinoless double beta decay is absent
论文作者
论文摘要
我们考虑具有两个右撇子中微子$ n_1 $和$ n_2 $的SEESAW模型，该模型是分层的，并研究了它们对中微子Double Beta（$ 0νββ$）衰减的贡献。尽管Lepton的数量被主要的右撇子中微子群体损坏，但在某些情况下可能不存在此类衰减过程。我们提出了一种可能性，即通过选择$ n_1 $的特定混合元素，而较轻的$ n_1 $通过选择了主动中微子的破坏性贡献，而$ n_2 $则足够沉重，以免为$ 0的$0νβ.β$衰减做出贡献。在这种情况下，充电电流相互作用中$ n_1 $的混合元素取决于其质量和主动中微子的主要阶段。然后，我们研究了这种可能性对$ n_1 $的直接搜索的影响。此外，我们讨论了当不存在一个特定核中$ 0νβ$衰减的情况下的结果。
We consider the seesaw model with two right-handed neutrinos $N_1$ and $N_2$ which masses are hierarchical, and investigate their contribution to the neutrinoless double beta ($0 νββ$) decay. Although the lepton number is broken by the Majorana masses of right-handed neutrinos, such decay processes can be absent in some cases. We present a possibility where the lighter $N_1$ gives a destructive contribution to that of active neutrinos by choosing the specific mixing elements of $N_1$, while $N_2$ is sufficiently heavy not to contribute to the $0 νββ$ decay. In this case the mixing elements of $N_1$ in the charged current interaction are determined by its mass and the Majorana phase of active neutrinos. We then study the impacts of such a possibility on the direct search for $N_1$. In addition, we discuss the consequence of the case when the $0 νββ$ decay in one specific nucleus is absent.
