Revisiting the $B^0\to {\pi }^0{\pi }^0$ decays in the perturbative QCD approach

Yun-Feng Li, Xian-Qiao Yu

We recalculate the branching ratio and CP asymmetry for ${\bar{B}}^0(B^0)\to {\pi }^0{\pi }^0$ decays in the Perturbative QCD approach. In this approach, we consider all the possible…