在NLC实验中通过e~+ e~-→t￣t 过程对ETC效应的探测Detecting ETC Effects Via the Process e~+ e~-→t￣t at NLC
岳崇兴,鲁公儒,李卫彬,孙俊峰
YUE Chong xing;LU Gong ru;LI Wei bin;SUN Jun feng (Phycics and Information Engincering college;
摘要(Abstract)：
本文在 topcolor辅助的多标度人工色模型框架下计算了 ETC相互作用对过程 e+ e- tt- 的反对称参量 AL R和极化参量 Pt L、Pt R的修正 .计算结果表明 ETC对 Pt R的影响非常小 ,可以被忽略 ,而对 AL R,Pt L 的修正效应可在未来的 NLC实验中得到检验
We calculate the corrections of extended technicolor(ETC) in teractions to the asmmetry parameter A LR and the polarized parameters P t L,P t R of the process e +e -tt- in topcolor assisted multiscale technicolor model.Our results show that the ETC effect on P t R is negligibly small which can be safely ignored,while the ETC effects on A LR ,P t L may be testable at the future Next Linear Colllider (NLC) experiment.
关键词(KeyWords)：
ETC相互作用;截面;Zt￣t耦合;NLC实验
ETC interactions;cross section;Ztt- coupling;NLC experiments
基金项目(Foundation): 国家自然科学基金!( E1 9990 50 0 4 );; 河南省杰出青年基金的资助
作者(Authors):
岳崇兴,鲁公儒,李卫彬,孙俊峰
YUE Chong xing;LU Gong ru;LI Wei bin;SUN Jun feng (Phycics and Information Engincering college;
DOI: 10.16366/j.cnki.1000-2367.2000.01.007
参考文献(References)：
- 1 Eicchten K ,Lane K.Two scale technicoplor [J].Phys Lett,1 989,B2 2 2 ,1 2 9～ 1 3 4 ;K.Lane and M.V.Ramana,walkingtechnicolor signatures athadron colliders[J].Phys.Rew,1 991 ,D4 4,2 678～ 2 70 0
- 2 Hill C T,Topcolorassisted technicolor[J].Phys Lett,1 995,B3 4 5,4 83～ 4 89;K.Lane and E.Eichten,Natural topcolor-as-sisted technicolor[J].Phys Lett,1 995,3 82～ 3 86
- 3 Yue Chongxing,Kuang Yuping,Lu Gongur Wan Lingde.Radiative correctionsto the Zbb- and Zγ+ γ- verticesin a Realisticone family extending TC model[J].Phys Rew,1 995,D52 ,53 1 4～ 53 1 8
- 4 Yue Chongxing ,Kuang Yuping ,Lu Gongru.Multiscale technicolorand the Zbb- vertex[J].JPhys,1 997,G2 3 ,1 63～ 1 68;U.Mahanta,Implication of mtand Rb on Ztt- couplingsin standard ETC models[J].Phys Lett,1 997,B3 92 ,1 4 5～ 1 4 9
- 5 Erler J,Langacker P.Statusof the standard model[J].UR0 81 6-T,hep-ph/980 93 52