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Top quark associated production of the neutral top-pion at high energy $e^{+}e^{-}$ colliders

Chongxing Yue·Yong Jia·Yanming Zhang·Hong Li
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Abstract

In the context of topcolor-assisted technicolor (TC2) models, we calculate the associated production of the neutral top-pion $π_{t}^{0}$ with a pair of top quarks via the process $e^{+}e^{-}\longrightarrow t\bar{t}π_{t}^{0}$. We find that the production cross section is larger than that of the process $ e^{+}e^{-}\longrightarrow t\bar{t}H$ both in the standard model (SM) and in the minimal supersymmetric SM. With reasonable values of the parameters in TC2 models, the cross section can reach $20fb$. The neutral top-pion $π_{t}^{0}$ may be direct observed via this process.

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Chongxing Yue, Yong Jia, Yanming Zhang, Hong Li. 2002-04-03. Top quark associated production of the neutral top-pion at high energy $e^{+}e^{-}$ colliders. https://doi.org/10.1103/physrevd.65.095010

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