在eγ对撞机上探测中性的Toppion介子  

Production of the Neutral Toppion at the eγ Colliders

作　　者：张晋宇[1] 王学雷[1] 杨悦玲[1] 李炳中[1] 

机构地区：[1]河南师范大学物理与信息工程学院,河南新乡453002

出　　处：《河南师范大学学报（自然科学版）》2003年第2期40-44,共5页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金 (编号 :0 175 0 17);河南省杰出青年基金 (编号 :0 2 0 3 );河南省高校杰出创新人才培养工程资助 (编号 :2 0 0 2KYCX0 0 9)

摘　　要：本文在顶色辅助的人工色 (TC2 )理论框架下 ,研究了中性toppion的产生过程 e-γ→e-Π第0t .结果表明这一过程的散射截面可达到几十个fb ,并且在未来e+e-线性对撞机上中性的toppion介子的年事例数多于10 3个 .因此 ,这一产生中性toppion的过程为我们探测toppion介子和检验TC2模型提供了良机 .另一方面 ,e-γ→e-Π0t 过程的散射截面比标准模型(SM)和最小超对称模型 (MSSM)下的类似过程大一个量级 (例如SM下的e-γ→e-H和MSSM下的e-γ→e-H0 (A0 ,h0 )过程 ) .因而 。In the framework of topcolor-assisted technicolor(TC2) model, we study a neutral toppion production process e -→ e -Π 0 t in this paper.Our results show that the production cross section of e -→ e -Π 0 t can reach the level of several tens fb, and over 10 3 neutral toppion events can be produced in the planned e +e - linear colliders each year. Therefore, such a toppion production process provides us a unique chance to detect toppion events and test the TC2 model. On the other hand, the cross section of e -→ e -Π 0 t is about one order of magnitude larger than those of some similar processes in SM and MSSM(i.e., e -→e -H in SM and e -→ e -H 0(A 0,h 0) in MSSM). So,we can easily distinguish the neutral toppion from other neutral Higgs bosons in SM and MSSM.

关 键 词：eγ对撞机 Toppion介子 人工色理论 TC2模型 线性对撞机 电弱对称破缺机制 

分 类 号：O572.33[理学—粒子物理与原子核物理] O572.214[理学—物理]