TC模型中PGB对Tevatron上tt产生截面的单圈修正  

Study on PGBs Correction to qq→tt at the Tevatron in the Technicolor Models

作　　者：杨华[1] 鲁公儒[1] 王学雷[1] 

机构地区：[1]河南师范大学物理系,郑州电子技术学院物理教研室

出　　处：《高能物理与核物理》1997年第7期591-596,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：分别在一代ＴＣ模型（ＯＧＴＣ）和最近由Ｇｅｏｒｇｉ等人提出的带有一个无质量的标量子的ＴＣ模型（ＭＴＣ）中计算了赝标哥尔斯通粒子（ＰＧＢ）对Ｔｅｖａｔｒｏｎ上ｑｑｔｔ过程的单圈修正。发现在ＯＧＴＣ和大部分的参数空间中，ＰＧＢ的修正是减小ｔｔ对截面的，如果色八重态ＰＧＢ的质量可以取到１５０ＧｅＶ的话，该修正达到－３８％，这样的修正值是有实验意义的。We calculate the Pseucdo-Godstone-Bosons(PGBs)corrections of order αm2t to qq→tt at the Tevatron in the framewords of the one generation technicolor model(OGTC)and a minimal technicolor model(MTC) with a massless weak doublet recentlypresented by C.D.Carone and H.Georgi.The PGBs correction can decrease thetotal tt production cross section by as much as -38%for top mass of 176GeV andcolor octet PGBs mass of 150GeV in the OGTC model,which is potentiallyobservable at the Tevatron .However,the results show that the corrections to thepprocess are unmeasurablly small in the MTC model.

关 键 词：TC模型 无质量标量子 哥尔斯通粒子 顶夸克 

分 类 号：O572.25[理学—粒子物理与原子核物理]