【摘要】 讨论了对特定的高能物理反应过程，如何按理论模型给出的微分截面表达式建立事例模拟产生器，包括用Ｍ．Ｃ．方法通过对多粒子末态相空间的积分计算反应截面，以及模拟产生末态粒子的四动量。较详细地讨论了通常使用的分层抽样法和重要抽样法的特点、适用范围、具体实现步骤和技巧，以及各自的优缺点．最后概要地介绍了我们建立的一个适用于 ＬＥＰ／ＳＬＣ加速器能量区间的 Ｂｈａｂｈａ散射事例产生器。更多还原

【Abstract】 An event simulation generator from differential cross section formula is described certain high energy physics process, which .includes the integral of final state phase space, and the generation of final particles’ four-momentum. For the commonly used stratified and importance sampling method, their individual characteristics, application domain, operating procedure and skills are discussed in detail, their advantages and disadvantages as well. Finally a Bhabha event generator established for LEP/SLC energy range is introduced.更多还原