Top-quark FCNC decay t -> cgg in topcolor-assisted technicolor model | |
Zhang, Huan-Jun; Zhang, HJ , Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China | |
刊名 | PHYSICAL REVIEW D |
2008 | |
卷号 | 77期号:5页码:- |
关键词 | Minimal Supersymmetric Model Changing Neutral Couplings Hadron Colliders Standard Model Linear Colliders Rare Decays Cern Lhc Unconstrained Mssm Fermilab Tevatron Symmetry-breaking |
ISSN号 | 1550-7998 |
英文摘要 | 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. |
学科主题 | Physics |
URL标识 | 查看原文 |
WOS记录号 | WOS:000254544200090 |
公开日期 | 2012-08-02 |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/5568] |
专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
通讯作者 | Zhang, HJ , Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Huan-Jun,Zhang, HJ , Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China. Top-quark FCNC decay t -> cgg in topcolor-assisted technicolor model[J]. PHYSICAL REVIEW D,2008,77(5):-. |
APA | Zhang, Huan-Jun,&Zhang, HJ , Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China.(2008).Top-quark FCNC decay t -> cgg in topcolor-assisted technicolor model.PHYSICAL REVIEW D,77(5),-. |
MLA | Zhang, Huan-Jun,et al."Top-quark FCNC decay t -> cgg in topcolor-assisted technicolor model".PHYSICAL REVIEW D 77.5(2008):-. |
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