PARTICLE PHYSICS AT LINEAR COLLIDERS

1.对e^e^湮没中有色标量粒子(如夸克)的对产生进行了=(α_S)QCD修正，并与费米子对产生进行了比较。研究了强对称破缺相互作用下反应e^e^-*W^W^-的末态相互作用。采用了两种形式的手征拉格朗日方程和一个具有向量共振的模型。我们发现，在500GeV中心或质量能量的线性对撞机上，可以探测到高达2,000-2,500 GeV的矢量共振质量的影响。3.如果顶夸克质量是由未知的强相互作用产生的，我们发现这种相互作用的影响在线性对撞机的光子-光子碰撞的顶对产生中是可见的。4.Bern-Kosower规则只知道一圈。我们将其推广到标量量子电动力学中的任意循环数。5.我们构造了标量场论中格林函数的一组新的方程。与Schwinger-Dyson方程不同的是，新的方程形成了一个闭集，可以在没有近似的情况下求解。

1.We calculate =(alpha_s) QCD correction to pair production of colored scalar particles (like squarks) in e^+e^- annihilation and compared it with fermion pair production. We find that both total and three-jet rate have significant dependence on the spin of the particle.2.We study the final state interaction in the reaction e^+e^-*W^+W^- in the presence of strong symmetry-breaking interactions. Two formulations of chiral Lagrangian and a model with a vector resonance are used. We find that the effect of a vector resonance mass up to 2,000-2,500 GeV may be detected at a linear collider of 500 GeV center-or-mass energy.3.If the top quark mass is generated by an unknown strong interaction, we find that the effect of the interaction is visible in top pair production by photon-photon collisions at linear colliders.4.The Bern-Kosower rule has been known only up to one-loop. We extend it to arbitrary number of loops in scalar quantum electrodynamics.5.We construct a new set of equations for Green functions in scalar field theory. Un-like Schwinger-Dyson equations, the new equations form a closed set, which may be solvable with no approximation.