S,T参数与新物理顶角图的负贡献

S,T Parameters and Negative Vertex Contributions

我们计算了荷电ＰＧ玻色子对Ｓ，Ｔ参数的顶角图贡献，发现该项贡献为负，使得Ｓ，Ｔ参数的理论预言值与实验值相符合．

The wertex contributions to the S,T parameters from charged PG bosons are estimited, and we find that the contributions is negative. Now the theoretical prediction of S and T are in good agreement with experiments due to the inclusion of the new negative vertex contributions.