【摘要】 计算了top人工色援助的多标度人工色模型下top夸克稀有衰变t→cV（V=Z，γ，g）的单圈过程．发现在这个模型下，扩展的人工色相互作用对这些衰变提供主要的贡献，总的贡献能够把它们在标准模型下的分支比提高大约5-6个量级，对于一般的参数值，这些的结果分别是：B（t→cZ）～10-6，B（t→cγ）～10-7，B（t→cg）～10-5.更多还原

【Abstract】 The decays t→cV(V= Z,γ, g) induced through loop processes are calculated in Topcolor-Assisted Multiscale Technicolor model. We find that the extended technicolor interactions provide the main contribution to these decays, and the total contribution can enhance the Standard Model branching ratios by as much as 5 to 6orders of magnitude, i. e., B(t→cZ) ~ 10-6, B(t→cβγ) ~ 10-7, B(t→cg)~ 10-5, for the favorable parameter values.更多还原