Physics at Tristan

1. 在统一电弱理论中完成了辐射修正的计算，整个结果发表在《程序》杂志上。定理Phys.2。编写了能自动计算统一电弱理论和量子光盘中所有可能过程的振幅和截面的计算机程序，并在国际会议上报道了成功的结果。基于QCD的射流生成方法是本课题研究的重要成果之一，目前正在准备中。从现在起，这将是特里斯坦实验中最重要的课题。对Tristan和LEP的e^-e^+湮灭截面的高阶QCD修正进行了定量分析。通过分析不同模型下的半轻子B衰变过程，估计了Kobayashi-Maskawa矩阵元评价中的不确定性。研究了有色粒子（如钛矿）的束缚态产生的横截面。研究了超对称理论中标量顶粒子在Tristan能量区产生的可能性。测量到比预期稍大的Tristan强子产生速率和LEP的Z衰变宽度。这些是由于超粒子的辐射修正的可能性进行了研究。

1. The calculation of radiative corrections in unified electro-weak theory has been accomplished, and the whole results have been published in the journal, Progr. Theor Phys.2. A computer program, which can automatically calculate the amplitudes and crosssections of all possible processes in unified electro-weak theory and QCD was made, and the successful results have been reported in international conferences.3. The review of the jet generation method based on QCD, which is one of the most important achievement in the present research project, is now under preparation. This will be the most important subject in the Tristan experiment from now on.4. A quantitative analysis of higher order QCD corrections to the e^-e^+ annihilation cross sections at Tristan and LEP have been done.5. The uncertainty in the evaluation of Kobayashi-Maskawa matrix element has been estimated, by analyzing semi-leptonic B decay processes in different models.6. The production cross section of bound states made of colored particles, like topponium, has been considered.7. A possibility that scalar top particle in super, symmetric theory is produced at Tristan energy region has been studied.8. Slightly larger than expected hadronic production rate at Tristan and Z decay width at LEP have been measured. The possibility that these are due to the radiative corrections of super particles was investigated.