TC2模型下新物理效应对衰变B→ππ的影响

The New Physics Effects on the Decay B→ππ in TC2 Model

分别在标准模型和TC2模型下，对两体非轻衰变B→ππ过程作了分析和计算，并考虑了湮灭贡献的影响．发现TC2模型下的新物理贡献对以树图贡献为主的衰变影响很小，同时衰变分支比的新物理修正效应对π^-质量的依赖性也不大．

By calculating and analyzing the non-leptonic decay B→ππ in SM and TC-2 models, including the annihilation contributions, we find the New Physics contributions in TC2 model to tree-dominated decays are very small. And this correction effect does not rely much on the parameter π^- .