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

Study on the Production of tcat 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 t c(or t c) in the e ⁺e ^-collision, i.e. e ⁺e ^-→t c(or t c), 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/ c ², 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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[19]	ZHANG Zhaoxi,LI Xueqian,YANG Maozhi,WANG Jianxiong. The Study on the Production of tc at LEPⅡ Energy in the Extended Standard Model with Two Higgs-doublets. Chinese Physics C, 1993, 17(12): 1081-1090.
[20]	LI Chun-Xian,WANG Zheng-Zhi. THE STUDY OF KNO SCALING IN THE pp COLLISION √

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Zhang Zhaoxi, Li Xueqian, Yang Maozhi and Wang Jianxiong. Study on the Production of t cat 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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沈阳化工大学材料科学与工程学院沈阳 110142

Study on the Production of tcat 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.