高能反应末态强子产率的普适质量关系  

Universal Mass Dependence of Final Hadron Yields in High Energy Reactions

作　　者：刘希明[1] 张学尧[1] 王海龙[1] 

机构地区：[1]山东大学物理系,济南250100

出　　处：《高能物理与核物理》2001年第5期377-382,共6页High Energy Physics and Nuclear Physics

摘　　要：最近实验上发现高能粒子反应末态强子多重数与其质量之间满足简单普适经验公式 .计算了e+e- 湮没与 pp(p)反应过程的直生介子与重子多重数 ,与经验公式中的参数完全一致 .对经验公式中与反应能量有关的参数给出合理解释 ,并讨论了质量普适关系的原因 .Recently experiments found that multiplicities of final state particles in high energy reactions and their masses satisfy a simple universal experienced formula. In this paper the multiplicities of directly producted mesons and baryons in e +e - annihilation and pp(p) reaction are calculated and are in complete agreement with the parameter in the experienced formula. And we can give a reasonable interpretation of parameters that are relevant to energy. The reasons of the mass universal relation are discussed.

关 键 词：普适质量关系 直生介子多重数 高能反应 直生强子多重数 高能物理学 E^+E^-湮没 pp(p^-)反应 

分 类 号：O572[理学—粒子物理与原子核物理]