论文标题
分解方法中重介子的两体非腿衰变
Two-body nonleptonic decays of the heavy mesons in the factorization approach
论文作者
论文摘要
在分解方法的框架中，我们计算了总共100个两体非质子衰减通道的分支分数，包括44个魅力中膜衰变的通道和底部介子衰变的56个通道。对于Charm Meson衰变，我们测试并确认了先前的观察结果，即限制了$ n \ to \ infty $的颜色数量可显着改善理论预测。对于底部的膜衰减，此外还包括企鹅贡献。作为重要的输入，我们采用了基于准电位方法的相对论夸克模型框架中获得的弱衰减形式。通过在半雌科$ d $和$ b $梅森的衰减中计算可观察结果，并通过实验数据获得了结果，已经通过计算可观察到的结果来进行了很好的测试。通常，可以接受对非肠道衰减分支部分的预测。但是，对于定量计算，必须考虑最终状态相互作用的更微妙的影响。
In the framework of the factorization approach we calculate the branching fractions of 100 two-body nonleptonic decay channels in total, including 44 channels of the charm meson decays and 56 channels of the bottom meson decays. For charm meson decays, we test and confirm the previous observation that taking the limit for the number of colors $N\to\infty$ significantly improves theoretical predictions. For bottom meson decays, the penguin contributions are included in addition. As an essential input, we employ the weak decay form factors obtained in the framework of the relativistic quark model based on the quasi-potential approach. These form factors have well been tested by calculating observables in the semileptonic $D$ and $B$ meson decays and confronting obtained results with experimental data. In general, the predictions for the nonleptonic decay branching fractions are acceptable. However, for a quantitative calculation it is necessary to account for a more subtle effects of the final-state interaction.
