莱泼物理的对话

Dialogue on LEP Physics

本文通过对话形式介绍了自然界存在的四大相互作用力，讨论了粒子加速器和探测器的原理，主要地介绍了莱泼实验在Ｚ０ 、Ｗ±粒子特性、电弱力、中微子代数、量子色动力学及在新粒子寻找方面的研究成果。这些成果全面精确地证明了标准模型的正确性。唯一的遗憾是标准模型所预言的Ｈｉｇｇｓ 粒子并未找到，但目前已确定其质量下限为９０ＧｅＶ。

In the dialog,the 4 types of natural interaction and the principle of particle accelerator and detector is discussed.Mainly,the LEP physics results,including Z 0,W ±,electroweak interaction,the number of neutrino generations,QCD test and new particle searching,are described.All thses results support the standard model,but Higgs,which is predicted by the standand model,was not found,the mass limit is m H>90 GeV at 95% confident level.