$B_u$ $\to$ $\psi M$ decays and $S$-$D$ wave mixing effects

Yueling Yang, Yupei Guo, Junfeng Sun +3

The $B_u$ $\to$ $\psi M$ decays are studied with the perturbative QCD approach, where the psion $\psi$ $=$ $\psi (2S)$, $\psi (3770)$, $\psi (4040)$ and $\psi (4160)$, and the light meson $M$ $=$ $\pi$…