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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
2008
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号77期号:5页码:-
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.
部门归属[Zhang, HJ] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; [Zhang, HJ] Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China
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
学科领域Physics
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收录类别SCI
WOS记录号WOS:000254544200090
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5568
专题理论物理所SCI论文
通讯作者Zhang, HJ , Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China
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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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