标题： 通过β衰变建立CVC的程度 显示英文标题

标题： Degree to which CVC is Established Through Beta Decay Alone

摘要： 精确研究$0^{+} \rightarrow 0^{+}$超允许$\beta$衰变提供了严格检验CVC假说所需的数据。 它们还将提供弱矢量耦合常数和Cabibbo-Kobayashi-Maskawa (CKM)矩阵的$V_{ud}$夸克混合元素的值。 确定该元素对于检验CKM矩阵的幺正性以及寻找标准模型之外的物理现象至关重要。 本文综述了当前$0^{+} \rightarrow 0^{+}$ $\beta$ 衰变数据及其意义，以及来自$\beta$二氧化硅衰变和$^{19}$中子的一些相关数据。 显示英文摘要

摘要： Precision studies of $0^{+} \rightarrow 0^{+}$ superallowed $\beta$ decays provide the necessary data to test stringently the CVC hypothesis. They will also provide a value for the weak vector coupling constant and the $V_{ud}$ quark mixing element of the Cabibbo-Kobayashi-Maskawa (CKM) matrix. The determination of this element is crucial for the test of the unitarity of the CKM matrix, and the search for physics beyond the Standard Model. This paper reviews the current status of $0^{+} \rightarrow 0^{+}$ $\beta$-decay data and their implications, as well as some relevant data from the $\beta$ decay of $^{19}$Ne and the neutron.