论文标题
夸克单位三角形
Quark unitarity triangles
论文作者
论文摘要
Cabibbo-Kobayashi-Maskawa矩阵的所有单位三角形的角度是从实验数据中确定的。我们的分析与CKM矩阵的参数化无关，它基于对单位性三角形的角度和区域的单位性的预测。我们注意到，从实验数据确定的四个单位三角形的侧面的长度不会形成三角形。假设单位三角形的面积相等，我们通过执行约束拟合来解决这种不兼容。我们证明了测量的数据与Cabibbo-Kobayashi-Maskawa矩阵的单位性的预测兼容，但是其中一个三角形有$2σ$张力。我们表明，可以从CKM矩阵的行乘法获得的单位性三角形的角度可以从通过列的乘法获得的角度获得。这两种类型的角度的平等是一个简单的，但对标准模型的一般结构进行了非常强大的测试。
The angles of all unitarity triangles of the Cabibbo-Kobayashi-Maskawa matrix are determined from the experimental data. Our analysis is independent of the parameterization of the CKM matrix and it is based on the predictions of the unitarity for the angles and the areas of the unitarity triangles. We note that the lengths of the sides of the four unitarity triangles determined from the experimental data do not form a triangle. We resolve this incompatibility by performing a constrained fit, assuming the equality of the area of the unitarity triangles. We demonstrate that the measured data are compatible with the predictions of the unitarity of the Cabibbo-Kobayashi-Maskawa matrix, but there is a $2σ$ tension for one of the triangles. We show that the angles of the unitarity triangles obtained by the multiplication of the rows of the CKM matrix can be obtained from the angles obtained by the multiplication of the columns. The equality of those two types of the angles is a simple, but a very powerful test of the general structure of the Standard Model.
