4.7 Article

Top-quark FCNC decay t→cgg in topcolor-assisted technicolor model

期刊

PHYSICAL REVIEW D
卷 77, 期 5, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.77.057501

关键词

-

向作者/读者索取更多资源

The topcolor-assisted technicolor (TC2) model predicts several pseudoscalars called top-pions and at loop level they can induce the flavor-changing neutral-current (FCNC) top-quark decay t --> cgg which is extremely suppressed in the standard model (SM). We find that in the allowed parameter space the TC2 model can greatly enhance such a FCNC decay and push the branching ratio up to 10(-3), which is much larger than the predictions in the SM (10(-9)) and in the minimal supersymmetric model (10(-4)). We also compare the result with the two-body FCNC decay t --> cg and find that the branching ratio of t --> cgg is at the same order as t --> cg. Such enhanced FCNC top-quark decays may serve as a good probe of the TC2 model at the future top-quark factory.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据