核子与原子核的奇异性产生和重味产生  

Strangeness Production and Heavy Flavour Production from Nucleons and Nuclei

作　　者：谢正莲[1] 钟显辉[2] 李磊[1] 罗延安[1] 宁平治[1] 

机构地区：[1]南开大学物理学院,天津300071 [2]湖南师范大学物理与信息学院,湖南长沙410081

出　　处：《物理学进展》2011年第1期46-59,共14页Progress In Physics

摘　　要：本文简要评述中高能强子散射和电磁散射实验中原子核的奇异性产生与重味产生,并重点介绍该领域近年新实验结果和对奇异性产生反应机制的新认识。实际上,自上世纪70年代起已通过强子反应和光核反应开始了奇异性产生的研究工作。由于近年来SATURNE和COSY(强子探针)以及ELSA和JLab(电磁探针)的发展,提供了大量高精度的奇异性产生方面的实验数据,使人们能够深入研究奇异性产生的碰撞机制,进而研究重子谱与超核物理。本文评述奇异性产生在实验和理论两方面的新进展,包括核靶与核子靶两种情况,以及它们与核结构和强子结构研究的联系。本文最后对重味产生反应也进行适当介绍。An overview of current situation of strangeness production and heavy ？avour produc-tion in the experiments of intermediate and high energy hadron scatterings and electromagnetic scatterings is presented.Moreover,we emphasize those recently published measured data in this realm and the comprehensive understanding of the mechanism of strangeness production.Strangeness production have been studied in hadron collisions and photoreactions since 1970s.Recent experiments at SATURNE and COSY in hadronic aspect,as well as ELSA and JLab in electromagnetic aspect,have confirmed the proposed reaction mechanisms.The strangeness production in JLab,HERMES and COMPASS may be proven to be a powerful tool to study the structure of baryons and hadronic matter.In this overview,we concentrate on the recent developments of strangeness production,both theoretically and experimentally,in terms of the nuclear structure and hadronic structure,and discuss what we can learn from the nucleon target and from the nucleus target.Finally,some issues of heavy ？avour production are also discussed.

关 键 词：奇异性产生 重味产生 中高能散射 反应机制 核子与核 

分 类 号：O572.33[理学—粒子物理与原子核物理]