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Liu Guo-Li; Liu, GL , Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China
Top Quark Decay t -> cb(b)over-bar in Topcolor-Assisted Technicolor Models
Source PublicationCHINESE PHYSICS LETTERS
KeywordMinimal Supersymmetric Model Standard Model Linear Colliders Rare Decays 3rd-family Quarks Fcnc Processes Physics Susy Lhc Condensation
AbstractThe topcolor-assisted technicolor (TC2) model predicts the existence of the top-pions and the CP-even top-Higgs with large flavor-changing couplings to the top quark, which at tree-level can mediate the top quark three-body decay t -> cb (b) over bar. We study this decay, show the dependence of the decay rate on the relevant TC2 parameters and compare the results with the predictions in the minimal supersymmetric model. We find that the decay rate in the TC2 model is much larger than that in the minimal supersymmetric model if the new particles are not too heavy. However, in consideration of the CDF and the LEP experiment limits, the top-pion mass is greater than 340 GeV in a more realistic parameter space, so the decay width of the channel t -> cb (b) over bar intermediated by top-pions will be depressed greatly and difficult to be detected at the future collider. Thus, to observe this channel at the future collider, considering the top-higgs contribution may be the possible way when the masses of the top-pions and the top-higgs are not degenerate.
2009
ISSN0256-307X
Volume26Issue:10Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5236
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLiu, GL , Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China
Recommended Citation
GB/T 7714
Liu Guo-Li,Liu, GL , Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China. Top Quark Decay t -> cb(b)over-bar in Topcolor-Assisted Technicolor Models[J]. CHINESE PHYSICS LETTERS,2009,26(10):-.
APA Liu Guo-Li,&Liu, GL , Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China.(2009).Top Quark Decay t -> cb(b)over-bar in Topcolor-Assisted Technicolor Models.CHINESE PHYSICS LETTERS,26(10),-.
MLA Liu Guo-Li,et al."Top Quark Decay t -> cb(b)over-bar in Topcolor-Assisted Technicolor Models".CHINESE PHYSICS LETTERS 26.10(2009):-.
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