【摘 要】
：
在Topcolor辅助的Technicolor(TC2)模型下,研究了一个产生中性toppion 介子(Π0t)的味改变过程:e+e-→ttcΠ0t. 研究结果表明,在TESLA 对撞机上,当质心能量高时,在大多数参数
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在Topcolor辅助的Technicolor(TC2)模型下,研究了一个产生中性toppion 介子(Π0t)的味改变过程:e+e-→ttcΠ0t. 研究结果表明,在TESLA 对撞机上,当质心能量高时,在大多数参数区间,e+e-→tcΠ0t的产生截面可达到0.1fb量级,每年可有数十个Π0t介子事例产生. 当Π0t质量较小时, 由于共振效应,产生截面可达几个fb. 由于背景干净,有可能在TESLA对撞机上探测到Π 0t介子事例. 另一方面,研究发现,可以在实验中清晰地探测到toppion-charm不变质量分布中的共振峰. 因此,Π0t介子的产生过程e+e-→tcΠ0t为人们提供了一个极好的机会,来探测中性Π0t介子,从而检验TC2模型.
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