arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0807.1559hep-ph
收藏

中微子质量与无中微子双β衰变

Neutrino Mass and Neutrinoless Double Beta Decay

Petr Vogel

摘要:

简要回顾了寻找$0νββ$衰变的动机。文章强调,轻Majorana中微子的交换不是衰变的唯一可能机制。轻子数和轻子味破坏之间的联系进行了描述,并在阐明$0νββ$衰变机制的作用进行了讨论。会谈的主要议题是核矩阵元素及其不确定性的评估。描述了影响矩阵元值的各种物理效应,并比较了两种主要方法,准粒子无规相近似和核壳模型的结果。

英文摘要:

The motivation for the search for $0νββ$ decay is briefly reviewed. It is stressed that the exchange of light Majorana neutrinos is not the only possible mechanism of the decay. The link between lepton number and lepton flavor violation is described and its role in elucidating the $0νββ$-decay mechanism is discussed. The main topic of the talk is the evaluation of the nuclear matrix elements and their uncertainty. Various physics effects that influence the value of the matrix elements are described and the results of the two main methods, the quasiparticle random phase approximation and the nuclear shell model, are compared.

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。

↑