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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
Source PublicationPHYSICAL REVIEW D
KeywordMinimal Supersymmetric Model Changing Neutral Couplings Hadron Colliders Standard Model Linear Colliders Rare Decays Cern Lhc Unconstrained Mssm Fermilab Tevatron Symmetry-breaking
AbstractThe 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.
2008
ISSN1550-7998
Volume77Issue:5Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5568
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZhang, HJ , Henan Normal Univ, Dept Phys, Henan 453007, Peoples R China
Recommended Citation
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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