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链圈图修正下核子与核子的散射截面

Cross Section Between Nucleons with Chain Loop Correction
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摘要 利用二体初态到二体末态的散射理论,计算出了核子与核子相互作用的最低阶散射截面,并用大动量积分极限法和复变函数积分法,严格计算出了介子传播子链圈图重整化后的有限量.根据传播子的四维动量的不同取值,给出了有限量的数值结果,相应的得到修正后的核子与核子相互作用的散射截面.最后对两结果作了比较,得出散射截面的相对修正值.把链圈图修正后的结果与实验结果作了对比后,验证了核子与核子的这种相互作用可以用量子场论微扰理论来处理. According to scattering theory, the lowest order cross section between nucleons is calculated. Besides, based on the Great Moment Integral Limitation and the Complex Function Integral Method, the corrected cross section is obtained by treating the pion propagator with chain approximation. The experiment results show that perturbation theory can be used to deal with strong interaction.
出处 《重庆大学学报(自然科学版)》 EI CAS CSCD 北大核心 2005年第7期122-125,共4页 Journal of Chongqing University
基金 国家自然科学资金资助课题(10175096) 国家重点基础研究973计划 基金号:2003CB716300
关键词 大动量积分极限法 复变函数积分 散射截面 链圈图修正 重整化 cross section chain loop correction renormalization great moment integral limitation complex function integral
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参考文献6

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