作　　者： ; ; ;

机构地区： 重庆大学数理学院

出　　处： 《重庆大学学报（自然科学版）》 2005年第6期110-112,共3页

摘　　要： 笔者在标准模型下计算了两个光子的碰撞过程中产生top夸克对和一个附带的中性Higgs粒子的最低阶的散射截面.该过程从理论上可以在新一代的线性对撞机上实现.ttH的产生是探索中性Higgs粒子和Top夸克耦合与Higgs粒子质量关系的唯一的直接途径.讨论该过程对于理解higgstop耦合具有重要的意义.通过理论计算得到的结果是当质心能量的取值在0.5～2TeV之间,而Higgs粒子的质量在120～200GeV时,其散射截面大致在1～3fb之间.在实验条件达到相应的条件时,利用理论计算结果能为实验上寻找Higgs粒子提供帮助. This paper computes the lowest cross section formed by top quark twin and an accompanied Higgs article under the standard model when two photons colliding. The procession can be theoretically realized by the application of up-to-date linear colliding machines. The production of t is the only direct way today in the research for both the coupling between Higgs article and top quarks and the mass relationship of Higgs. This type of discussion holds key meanings for the understanding to Higgs-top coupling. According to the computation, the results indicates that when the mass of Higgs article ranges 120 to 200Gev and its mass center energy values 0.5 to 2 Tev, the cross section varies approximately from 1 fb to 3 fb. This computation provides help to the finding of Higgs articles in experiment if it is available in the future.

关 键 词： 标准模型 费曼规则 质量 散射截面

领　　域： [理学] [理学]