论文标题
收取不对称的腐烂$ b \ rightarrow d \ bar dk $
Charge asymmetry in decays $ B\rightarrow D\bar DK$
论文作者
论文摘要
我们讨论了$ b \ rightarrow d \ bar dk $衰减中的电荷不对称，并在$ψ（3770）$ resonance附近的$ d \ bar d $对不变的质量。与$ψ（3770）$ e^+e^ - $ nihihilation不同，$ b^+$衰减$ d^0 \ bar d^0 $生产的概率几乎是$ d^+d^ - $的三倍。在$ b^0 $衰减中，这些概率的比率将相反。效果是通过以下事实来解释的：在$ b $ -Meson的衰减中，$ d \ bar d $ pa对是在等层和等副措施的叠加中产生的，并且仅与$ k $ -Mesons结合使用，总州的总州具有$ 1/2 $ ISOSPIN。我们提出了一个简单的模型，其中非谐振异位振幅与共振等速度振幅的干扰解释了实验数据。
We discusses the charge asymmetry in $ B\rightarrow D\bar DK$ decays with an invariant mass of the $D\bar D$ pair near the $Ψ(3770)$ resonance. Unlike $ Ψ(3770) $ decays in $ e^+e^- $ annihilation, in $B^+$ decays the probability of $D^0\bar D^0$ production is almost three times higher than $D^+ D^-$. In $B^0$ decays, the ratio of these probabilities will be opposite. The effect is explained by the fact that, in $B$ -meson decays, the $D\bar D$ pair is produced in a superposition of isoscalar and isovector states, and only in combination with $K$ -mesons the total state has $ 1/2 $ isospin. We present a simple model in which the interference of the nonresonant isovector amplitude with the resonant isoscalar amplitude explains the experimental data.
