Rare Top Quark Decays t→cV in theTopcolor-Assisted Technicolor Model

LU Gong-Ru; YIN Fu-Rong; WANG Xue-Lei; WAN Ling-De

Chinese Physics C> 2004, Vol. 28> Issue(4) : 345-349

Rare Top Quark Decays t→cV in theTopcolor-Assisted Technicolor Model

College of Physics and Information Engineering,Henan Normal University,Xinxiang 453002,China

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Abstract：
We consider the rare top quark decays in the framework of topcolorassisted technicolor (TC2) model. We find that the contributions of top-pions and top-Higgs predicted by the TC2 model can enhance the SM branching ratios by as much as 6—9 orders of magnitude. i.e., in the most case, the orders of magnitude of branching ratios are Br(t→cg)～10^－5, Br(t→cZ)～10^－5, Br(t→cγ)～10^－7. With the reasonable values of the parameters in TC2 model, such rare top quark decays may be testable in the future experiments. So, rare top quark decays provide us a unique way to test TC2 model.

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LU Gong-Ru, YIN Fu-Rong, WANG Xue-Lei and WAN Ling-De. Rare Top Quark Decays t→cV in theTopcolor-Assisted Technicolor Model[J]. Chinese Physics C, 2004, 28(4): 345-349.

LU Gong-Ru, YIN Fu-Rong, WANG Xue-Lei and WAN Ling-De. Rare Top Quark Decays t→cV in theTopcolor-Assisted Technicolor Model[J]. Chinese Physics C, 2004, 28(4): 345-349. shu

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Received: 2003-06-27
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Rare Top Quark Decays t→cV in theTopcolor-Assisted Technicolor Model

Corresponding author: WANG Xue-Lei,

College of Physics and Information Engineering,Henan Normal University,Xinxiang 453002,China

Received Date: 2003-06-27

Accepted Date: 1900-01-01

Available Online: 2004-04-05

Abstract: We consider the rare top quark decays in the framework of topcolorassisted technicolor (TC2) model. We find that the contributions of top-pions and top-Higgs predicted by the TC2 model can enhance the SM branching ratios by as much as 6—9 orders of magnitude. i.e., in the most case, the orders of magnitude of branching ratios are Br(t→cg)～10^－5, Br(t→cZ)～10^－5, Br(t→cγ)～10^－7. With the reasonable values of the parameters in TC2 model, such rare top quark decays may be testable in the future experiments. So, rare top quark decays provide us a unique way to test TC2 model.

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Rare Top Quark Decays t→cV in theTopcolor-Assisted Technicolor Model

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