在高能e^+e^-对撞机上探测top-Higgs的可能性  

Possibility of Detecting the top-Higgs at High Energy e^+e^- Colliders

作　　者：岳崇兴[1] 马秀艳[2] 柳国丽[1] 徐庆君[1] 

机构地区：[1]河南师范大学物理与信息工程学院,新乡453002 [2]安阳师范学院物理系,河南安阳455000

出　　处：《高能物理与核物理》2002年第10期1004-1008,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 (1 990 5 0 0 4) ;河南省杰出青年基金 (991 1 );河南省教育基金资助~~

摘　　要：计算了top Higgsh0t 对过程e+e- → tc νeνe,e+e- →γ(Z) tc的贡献 ,并进一步讨论了在高能线性e+e- 对撞机 (LC)上探测此粒子的可能性 .结果表明 :h0t 对过程e+e- → tc νeνe 的贡献很大 ,通过此过程可在LC实验中探测top Higgs;另外e+e- →γ tc也是探测h0tIn the context of topcolor assisted technicolor(TC2) models,we calculate the contributions of the top Higgs h 0 t to e +e -→c eν e and compare the results with that of h 0 t to the processes e +e -→ Zh 0 t→Zc and e +e -→γh 0 t→γc. We further discuss the signals of these process at high energy e +e - collider (LC) experiments. We find that e +e -→c eν e is very sensitive to h 0 t,which can be easily detected via this process in the future LC experiments with s =500\_1500GeV,as long as its mass below the t threshold. The processes e +e -→Zc and e +e -→γc can also be used to detect h 0 t in the future LC experiments with s =500GeV.

关 键 词：高能e^+e^-对撞机 探测 TOP-HIGGS 产生截面 味改变耦合 粒子物理学 顶夸克 

分 类 号：O572.33[理学—粒子物理与原子核物理]