资源下载 搜索资源 - 如何将Bd0→J/ψπη，KK$${\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\overline{B}}_d^0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\应用于J/\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\psi\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\left（\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\uppi\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\eta，\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\overline{K}K\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\右）$$衰减以提取有关πη散射的信息