S-D混合与φ(3770)的电偶极跃迁

S-D Mixing and Electric Dipole Transition of φ(3770)

本文在粲偶素势模型的框架内,讨论了φ(3770)与φ(3686)之间的2~3S_1-1~3D_1混合对φ(3770)与φ(3686)电偶极跃迁的影响。结论是混合角θ=30°应子排除,而θ=—10°虽然可以对φ(3770)→X_0γ和φ(3686)→X_0γ给出改善的结果,但仍不能解决φ(3770)→X_1γ与实验的矛盾。

In the framework of the potential model for charmonium, the effects of 2~3S_1-1~3D_1 mixing between φ(3770) and φ(3686)on the electric dipole transitions of both φ(3770) and φ(3686) are discussed. It is concluded that the possibility for the mixing angle θ=30° should be ruled out. while the results for both φ(3770)→γχ_0 andφ(3686)→γχ_0 are improved with θ=-10°, the contradiction between the theoretical value and the experimental value for φ(3770)→γχ_1 still remains.