摘要
本文采用QED轻子扩充模型,应用量子场论中的微扰理论和重整化方法,研究高能正、反重轻子对碰撞生成双光子的反应问题,同时针对反应内部较为复杂的一种电磁相互作用过程作了理论分析与探讨,并严格计算出正、反重轻子对在重整化无穷高阶链图传播下生成双光子的反应微分截面,获得了精确理论结果.进而将该结果与树图传播下正、反重轻子对生成双光子的微分截面作了对比分析,获得有关辐射修正的重要信息.
In the extended model of lepton in QED, we use perturbation theory and renormalized technique in quantum field theory to study the process for the creation of double-photon via a pair of heavy lepton-antilepton with high energy collision. Besides, theoretical analyses and discussion aiming at one comparatively complicated process of electromagnetic interaction inside reaction were made, and the differential cross-section for double-photon production through a pair of heavy lepton-antilepton annihilation with renormalized infinite-orderchain-propagators was calculated rigorously. The precise results in theory were obtained. Moreover, after a comparison with the calculations of the tree diagram case, important information related to radiation correction was gained.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第3期627-634,共8页
Journal of Sichuan University(Natural Science Edition)
基金
973计划资助项目(2003CB716300)
国家自然科学基金(10175096)
中国工程物理研究院基金(2008T0401
2008T0402)
关键词
重整化链图传播子
角分布函数
微分截面
辐射修正
QED轻子扩充模型
renormalized chain-propagator, angular distribution function, differential cross section, radiation correction, extended model of lepton in QED
