论文部分内容阅读
用光锥QCD求和规则研究D+→π0lv~l衰变过程,在计算D+→π0跃迁形状因子过程中,通过构造新的关联函数,消除了tw ist-3波函数的不确定性给计算结果所带来的影响,从而使计算结果更加精确.最后计算得到的分支比与最近的实验数据相一致.
The decay process of D + → π0lv ~ l is studied by the light cone QCD summing rule. During the calculation of the shape factor of D + → π0 transition, the uncertainty of the tw ist-3 wave function is eliminated by constructing a new correlation function. So as to make the calculation result more accurate.The final calculated branch ratio is consistent with the latest experimental data.