论文标题
向量B-Meson的弱非质子衰减
Weak nonleptonic decays of vector B-mesons
论文作者
论文摘要
我们研究了我们先前论文中开发的协变量夸克模型（CCQM）中向量B-Meson的辐射和弱非质子衰变。首先，我们计算矩阵元素，并衰减辐射衰减的宽度$ b^\ ast \ tobγ$。将获得的结果与其他方法中获得的结果进行了比较。然后，我们将$ b^\ ast \ ast \ ast v $视为非质量衰减，该\ ast v $通过树级夸克图进行。结果表明，振幅的分析表达式对应于分解方法。在我们的模型框架内，我们计算了$ b^\ ast \ to d^\ ast（v）$ transition在动量传递平方的整个物理区域中的$ b^\ ast \ to d^\ ast（v）$的形式。最后，我们计算两体衰减宽度，并将结果与其他模型进行比较。
We study the radiative and weak nonleptonic decays of vector B-mesons within the covariant confined quark model (CCQM) developed in our previous papers. First, we calculate the matrix elements and decays widths of the radiative decays $B^\ast\to Bγ$. The obtained results are compared with those obtained in other approaches. Then we consider the nonleptonic decays $B^\ast\to D^\ast V$ which proceed via tree-level quark diagrams. It is shown that the analytical expressions for the amplitudes correspond to the factorization approach. In the framework of our model we calculate the leptonic decay constants and the form factors of the $B^\ast\to D^\ast(V)$ transitions in the entire physical region of the momentum transfer squared. Finally, we calculate the two-body decay widths and compare our results with other models.
