Production of Top-Pions Associated with W Boson at Next Generation γγ Colliders  

作　　者：LIU Yao-Bei SHEN Jie-Fen 

机构地区：[1]Henan Institute of Science and Technology, Xinxiang 453003, China [2]Department of Life Science and Technique, Xinxiang Medical University, Xinxiang 453003, China

出　　处：《Communications in Theoretical Physics》2009年第8期318-322,共5页理论物理通讯（英文版）

基　　金：Supported in part by the Foundation of Henan Educational Committee under Grant No.2009B140003

摘　　要：In the context of topcolor-assisted technicolor （TC2） model, we study the charged and neutral top-pions production process γγ →W＋ ∏t-∏t^0. We find that the production cross section is larger than that of the process γγ→ W＋ H-H in the minimal supersymmetric standard model. With reasonable values of the parameters in the TC2 model, the cross section can reach the level of a few fb. Furthermore, the flavor-changing （FC） decay mode ∏t^0 → te^- is the best channel to detect the neutral top-pion due to the clean SM background. With a large number of events and the clean background, the neutral top-pion should be observable at future linear colliders operating in γγ mode at the TeV energy scale.

关 键 词：TC2 model cross section linear collider 

分 类 号：O572.2[理学—粒子物理与原子核物理] O572.214[理学—物理]