中文

反常规范耦合对$\epsilon'/\epsilon$的贡献

高能物理 - 唯象学 2009-10-31 v2

摘要

最近KTev合作组测量了Re(ϵ/ϵ)=(28±4.1)×104Re(\epsilon'/\epsilon) = (28\pm 4.1) \times 10^{-4},这与NA31的早期测量结果一致。标准模型对ϵ/ϵ\epsilon'/\epsilon的预测处于实验允许范围的下端,具体取决于强子矩阵元模型。在本文中,我们研究了反常规范耦合的贡献。我们发现反常耦合的贡献可能很显著,并能增强ϵ/ϵ\epsilon'/\epsilon,使其值更接近数据。

关键词

引用

@article{arxiv.hep-ph/9903242,
  title  = {Contribution to $\epsilon'/\epsilon$ from anomalous gauge couplings},
  author = {Xiao-Gang He},
  journal= {arXiv preprint arXiv:hep-ph/9903242},
  year   = {2009}
}

备注

A typo in eq. 6, and numerical errors in eqs. 8 and 12 corrected. Anomalous gauge couplings can enhance e'/e by a factor as large as 2.5