论文标题
中微性性质和Majoraana CP阶段的推断，从$0νβ$衰减，倒数有序
Inference of neutrino nature and Majorana CP phases from $0νββ$ decays with inverted mass ordering
论文作者
论文摘要
中微子质量有序是正常的还是倒置的，仍然是中微子物理学的实验开放问题。中微子质量排序的知识对于中微子双β（$0νβ$）的衰减实验非常重要，这些实验可以确定大量中微子的性质，即它们是dirac还是majoragana fermions。最近，Kamland-Zen 800测量已首次达到倒下订购的参数空间，并消失了最轻的中微子质量。通过假设倒下的顺序，我们试图从不久的将来对$0νβ$衰减的阴性或积极观察得出中微子性质和Majoraana CP阶段的物理信息。此外，还检查了在阳性观察情况下提取核基质元件的可能性。为了避免中微子群众未知先验的歧义，我们采用了最大似然方法，而不是以前的作品中通常考虑的贝叶斯方法。
Whether the neutrino mass ordering is normal or inverted remains an experimentally open issue in neutrino physics. The knowledge of neutrino mass ordering has great importance for neutrinoless double-beta ($ 0νββ$) decay experiments, which can establish the nature of massive neutrinos, i.e., whether they are Dirac or Majorana fermions. Recently, the KamLAND-Zen 800 measurement has reached for the first time the parameter space of the inverted ordering with a vanishing lightest neutrino mass. By assuming the inverted ordering, we attempt to derive the physical information of the neutrino nature and Majorana CP phases from a negative or positive observation of $ 0νββ$ decays in the near future. Moreover, the possibility of extracting the nuclear matrix element in the case of a positive observation is also examined. To avoid the ambiguity from unknown priors of neutrino masses, we adopt the maximum likelihood method instead of the Bayesian approach usually considered in previous works.
