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

作     者：LIU Yao-Bei SHEN Jie-Fen 

作者机构：Henan Institute of Science and Technology Xinxiang 453003 China Department of Life Science and Technique Xinxiang Medical University Xinxiang 453003 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2009年第52卷第8期

页      面：318-322页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

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

主　　题：TC2 model cross section linear collider 

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.