Top Quark Decay t -> cb(b)over-bar in Topcolor-Assisted Technicolor Models | |
Liu Guo-Li; Liu, GL , Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China | |
刊名 | CHINESE PHYSICS LETTERS |
2009 | |
卷号 | 26期号:10页码:- |
关键词 | Minimal Supersymmetric Model Standard Model Linear Colliders Rare Decays 3rd-family Quarks Fcnc Processes Physics Susy Lhc Condensation |
ISSN号 | 0256-307X |
英文摘要 | The 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. |
学科主题 | Physics |
URL标识 | 查看原文 |
WOS记录号 | WOS:000270303200021 |
公开日期 | 2012-08-02 |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/5236] |
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 | Liu, GL , Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China |
推荐引用方式 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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