Study on the Production of t<span style="border-top: 1px solid; padding-top: 0px;">c</span> at LEPII Energy in the Extended Standard Model with Two Higgs-Doublets

Zhang Zhaoxi; Li Xueqian; Yang Maozhi; Wang Jianxiong

Chinese Physics C> 1993, Vol. 17> Issue(S4) : 335-345

Study on the Production of tc at LEPII Energy in the Extended Standard Model with Two Higgs-Doublets

1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, China;
2 Department of Physics, Nankai University, Tianjin, China;
3 Theory Group, KEK, Japan

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In this paper, the production rate of tc (or tc) in the e⁺e^- collision, i.e. e⁺e^-→tc (or tc), is computed in the Standard Model and its extension with two Higgs-doublets and the fourth generation of fermions included. The results show that even the mass of top quark is around 140 GeV/c², as predicted by the low energy phenomenology, the cross section of this process may still reach an observable value at LEPII, if the favorable parameters are taken in the extension model.

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Zhang Zhaoxi, Li Xueqian, Yang Maozhi and Wang Jianxiong. Study on the Production of tc at LEPII Energy in the Extended Standard Model with Two Higgs-Doublets[J]. Chinese Physics C, 1993, 17(S4): 335-345.

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Received: 1992-07-11

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Study on the Production of tc at LEPII Energy in the Extended Standard Model with Two Higgs-Doublets

1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, China;
2 Department of Physics, Nankai University, Tianjin, China;
3 Theory Group, KEK, Japan

Received Date: 1992-07-11

Abstract: In this paper, the production rate of tc (or tc) in the e⁺e^- collision, i.e. e⁺e^-→tc (or tc), is computed in the Standard Model and its extension with two Higgs-doublets and the fourth generation of fermions included. The results show that even the mass of top quark is around 140 GeV/c², as predicted by the low energy phenomenology, the cross section of this process may still reach an observable value at LEPII, if the favorable parameters are taken in the extension model.