【摘要】 在Ｔｏｐｃｏｌｏｒ辅助的多标度人工色（ＴＯＰＭＴＣ）模型框架下计算了扩充人工色（ＥＴＣ）相互作用对顶夸克对产生过程中ＣＰ破坏参数δ的贡献（δ＝σ［ｅ－ｅ→ｔ（－）－ｔ（－）］－σ［ｅ－ｅ→ｔ（＋）－ｔ（＋）］／σ（ｅ－ｅ→ｔ－ｔ））．计算结果表明，对于合理的参数取值，ＥＴＣ相互作用可对参数δ产生较大的修正（８．６５ × １０－３≤δ≤１．０９ ×１０－２）．期望在将来的 ＮＬＣ实验中能观测到此修正效应．更多还原

【Abstract】 We calculate the contributions of extended technicolor (ETC) interaction to CP violation asymmetry parameter δ in top quark pair Production, δ = σ[e-e→t(-)-t(-)]-σ[e-e→t(+)-t(+)]/σ(e-e→t-t), in topcolor-assisted multiscale technicolor (TOPCMTC) model. Using the new LEP value of Rb, we give the numerical results. Our results show that ETC interactions can produce significantly effects on CP violation for a certain range of the parameters in TOPCMTC model. For 5 00 GeV<1/2s< 15 00 GeV, the value of parameter δ is in the range of 8. 65 × 10-3 ≤δ≤1. 09 × 10-2. We expect that this effect may be testable in the future NLC experiments.更多还原