计算物理 ›› 1995, Vol. 12 ›› Issue (2): 275-278.

• 论文 • 上一篇    下一篇

高能物理过程事例产生器的建立

张子平, 叶竞波   

  1. 中国科技大学近代物理系, 合肥 230026
  • 收稿日期:1993-03-29 修回日期:1994-07-07 出版日期:1995-06-25 发布日期:1995-06-25
  • 基金资助:
    国家自然科学基金资助项目

ESTABLISHMENT OF EVENT GERENATOR FOR HIGH ENERGY PHYSICS PROCESS

Zhang Ziping, Ye Jingbo   

  1. Department of Modern Physics, China University of Science and Technology, Hefei 230026
  • Received:1993-03-29 Revised:1994-07-07 Online:1995-06-25 Published:1995-06-25

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.

关键词: 事例模拟产生器, 分层抽样法, 重要抽样法, Bhabha散射

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.

Key words: event simulation generator, stratified sampling method, importance sampling method, Bhabha scattering

中图分类号: