关于光子对撞机上底夸克对产生的研究

计算了顶色辅助人工色模型对光子对撞机上底夸克对产生过程的Yukawa 修正.发现在合理的参数范围内，赝标量Goldstone 玻色子引起的相对修正与树图水平相比有3.17% 到5.90% 的压低.该结果明显地大于标准模型、双Higgs 二重态模型和最小超对称模型中的相应贡献. 这样的修正对于正在设计中的国际直线对撞机上检验标准模型和探索新物理是很有意义的. 关键词： 顶色辅助人工色模型 光子对撞机 散射截面

Bottom quark pair production in yy collision'

We study the Yukawa corrections to the γγ→bb cross section in the topcolor assisted technicolor models at the photon photon colliders.We find that.for the favorable parameters,the relative corrections from pseudo-Goldstone bosom give out a 3.17%-5.90%decreinent of the cross section from the tree level when√s=500 GeV,the total relative COrrections are significantly larger than the corresponding corrections in the standard model,the general two Higgs doublet model and the minimal supersymmetfic standard model.So the observation of the correction to the γγ→bb process at the International Linear Colliders is certainly the clue to the standard model and new physics.