e^+e^-湮没中的胶子碎裂  

THE FRAGMENTATION OF GLUON IN e^+e^- ANNIHILATION

作　　者：刘希明 吴华友 

机构地区：[1]山东大学物理系 [2]曲阜师大物理系

出　　处：《高能物理与核物理》1990年第11期1001-1006,共6页High Energy Physics and Nuclear Physics

摘　　要：本文假定e^+e^-湮没时产生的胶子的强子化,胶子首先劈裂成一对等效的夸克、反夸克对.夸克之间的色相互作用,碎裂成末态强子.由此计算的e^+e^-→3jet事例中的带电粒子多重数,胶子与夸克jet中多重数比率,以及e^-e^-三胶子事例中的重子比率,都与实验结果一致.解释了e^+e^-→3jet末态粒子的角分布.In this paper, we suggest that the gluon is hadronized by first splitting into a quark-antiquark pair(?) The final hadrons are produced by the color interactions among the quarks and antiquarke. By this assumption, the calculated average charged particle multiplicities in e^+e^-→3 jet events, and the ratio of multiplicities between gluon and quark jet, and the rates of baryons in e^+e^- three gluons events all agree well with experiments. The angle distribution of final particles can be explained.

关 键 词：E^+E^-湮没 胶子 碎裂 

分 类 号：O572.322[理学—粒子物理与原子核物理]