光子对撞机上TC2模型下top-pion介子对产生过程  

The Pair Production of Charged Top-pion in the TC2 Model at Photon-photon Colliders

作　　者：侯正田[1] 理记涛[1] 谷勤忠[2] 

机构地区：[1]商丘医学高等专科学校公共学科部,河南商丘476100 [2]商丘师范学院物理与信息工程学院,河南商丘476100

出　　处：《河南师范大学学报（自然科学版）》2012年第1期70-72,共3页Journal of Henan Normal University(Natural Science Edition)

基　　金：河南省教育厅自然科学研究计划(2010A140013)

摘　　要：在TC2模型下通过γγ→πt+πt-过程研究了对产生带电top-pion介子.结果表明,对于γγ→πt+πt-过程,其产生截面能够达到100fb量级.在年积分亮度为500fb-1的高能直线对撞机上,通过γγ→πt+πt-过程,每年能收集到数以千计的πt+πt-事例.有如此多的事例数和干净的背景,带电top-pion介子应该能在光子对撞机上被观测到.因此,该研究能帮助寻找带电top-pion介子,并为检验TC2模型提供很好的理论依据.The pair production of charged top-pion is studied via γγ→π＋tπ-tprocess in the framework of the top-color-assisted technicolor（TC2） mode.The study shows that the cross-section reaches to the level of hundreds of fb.With the yearly integrated luminosity of 500 fb-1 expected at the high-energy linear colliders,the research could collect thousands of charged top-pion of events via the process of γγ→π＋tπ-t.Due to these large number of events and the clean standard model（SM） background,the charged top-pion should be observabled at the photon-photon colliders.Therefore,this paper can help to search for charged top-pion,and furthermore,to test the TC2 mode1.

关 键 词：TC2模型 TOP-PION介子 产生截面 

分 类 号：O572.2[理学—粒子物理与原子核物理] O413[理学—物理]