摘要
在ＴＣ２理论框架下，计算了在高能正负电子对撞机（ＬＣ）上，ＴＣ２动力学对味改变中性流过程 ｅ＋ｅ－→ｔｃ产生截面的修正和 ＴＣ２理论预言的中性 ｔｏｐ－ｐｉｏｎπ０ｔ对该过程产生截面的贡献．计算结果表明：ＴＣ２理论对ＬＣ实验中ｔｃ夸克联合产生的贡献主要来自中性 ｔｏｐ－ｐｉｏｎ π０ｔ．在 ＴＣ２理论的绝大部分参数空间内，可达１０－２ｐｈ．若假设 ＬＣ的积分亮度为 ５００ｆｂ－１，则每年可产生数千个ｔｃ事例．因此，将来的ＬＣ实验可作为检验ＴＣ２ 理论的重要工具．
In the framework of topcolor-assisted technicolor (TC2) theory, we calculate the contri- butions of TC2 dynamics and the neutral top-pion to top-charm production at the high energy e+ e- linear collider (LC) experiments. Our results show that the contributions mainly come from the neu- tral top-pion π0t. The cross section is of the order of 10-2 pb in most of the parameter space in the TC2 theory. If we assume that the integrated luminosity of LC experiments is 500fb-1, it would pro- duce serveal thousand events. So it is possible to detect the signature of TC2 theory at the future LC experiments.
出处
《高能物理与核物理》
EI
CSCD
北大核心
2001年第10期945-951,共7页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
河南省教育厅
河南省杰出青年基金资助
关键词
TC2理论
中性top-pion
产生截面
高能正负电子对撞机
tc夸克
联合产生
动力学
TC2 theory, neutral top-pion, cross section, e+ e- linear colliders. Received 10 October 2000 supported by National Natural Science Foundation of China. the Excellent Youth Foundation of Henan Scientific committee
and Foundation of Henan Educa
