标题： 重夸克有效理论中$\varXi_Q-\varXi_Q'$的混合角 显示英文标题

标题： Mixing Angle of $\varXi_Q-\varXi_Q'$ in Heavy Quark Effective Therory

摘要： 重夸克有效理论提供了一种系统的方法来估计重夸克（如魅夸克（c）和底夸克（b））中强子态的混合角。 通过这种方法，可以估算重子$\varXi_Q-\varXi_Q'$的混合角。 发现$\varXi_Q$和$\varXi_Q'$之间的混合角在$Q = b$情况下为$\theta_b = 4.51^{\circ} \pm 0.79 ^{\circ}$，在$Q = c$情况下为$\theta_c = 8.12^{\circ} \pm 0.80 ^{\circ}$。 显示英文摘要

摘要： The Heavy Quark Effective Theory provides a systematic method to estimate a mixing angle of hadron states in a heavy quark, such as the charm quark (c) and the bottom quark (b). By using this method, the mixing angle of the baryons $\varXi_Q-\varXi_Q'$ can be estimated. It is found that the mixing angle between $\varXi_Q$ and $\varXi_Q'$ is given by $\theta_b = 4.51^{\circ} \pm 0.79 ^{\circ}$ for $Q = b$ case and $\theta_c = 8.12^{\circ} \pm 0.80 ^{\circ}$ for $Q = c$ case.