摘要
研究了顶色辅助的人工色 (TC2 )理论预言的中性top pionπ0t 的产生和衰变 .结果表明 :在高能正负电子对撞 (LC)实验中 ,通过e+e- →γπ0t 和e+e- →Zπ0t过程可以产生大量的π0t 粒子 ,通过e+e- →γπ0t→γ tc和e+e- →π0tZ→ tcZ过程可以探测中性top pionπ0t
We study the production and decay of the neutral top-pion π0t in topcolor-assisted technicolor (TC2) theory. Our results show that, except for the dominant decay modes bb over-bar , t over-bar c and gg, the π0t can also decay into γγ and Zγ modes. It can be significantly produced at high energy linear e+ e- collider (LC) experiments via the processes e+ e-->π0tγ and e+ e-->Zπ0t. We further calculate the production cross sections of the processes e+ e-->γπ0t->γt over-bar c and e+ e-->Zπ0t->Zt over-bar c. We find that the signatures of the neutral top-pion π0t can be detected via these processes.
出处
《高能物理与核物理》
EI
CSCD
北大核心
2002年第7期672-677,共6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 )
河南省教育厅资助~~
