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The rare top decay $t\to c g$ in topcolor assisted technicolor models

Chongxing Yue·Gongru Lu·Guoli Liu·Qingjun Xu
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Abstract

In the framework of topcolor-assisted technicolor(TC2) models, we calculate the contributions of flavor changing scalar couplings involved the neutral top-pion $π_{t}^{0}$ and top-Higgs $h_{t}^{0}$ to the branching ratio $B_{r}(t\longrightarrow cg)$. We find that the value of $B_{r}(t\longrightarrow cg)$ can reach $ 1\times10^{-3}$ with reasonable values of the parameters in TC2 models, which may be testable in the future experiments.

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Chongxing Yue, Gongru Lu, Guoli Liu, Qingjun Xu. 2001-08-05. The rare top decay $t\to c g$ in topcolor assisted technicolor models. https://doi.org/10.1103/physrevd.64.095004

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