LUND面积定律产生子在R值测量中的应用  

Applications of LUND Area Law Generator in R Measurement

作　　者：胡海明[1] 台安 黄光顺 祁向荣 蔡啸[1] 陈江川[1] 戴玉梅[5] 王至勇[1] 薛生田[1] 鄢文标[1] 周莉[1] 赵政国[1] 

机构地区：[1]中国科学院高能物理研究所,北京100039 [2]Department of Physics and Astronomy,University of California [3]中国高等科学技术中心,北京100080 [4]Fermi National Acceleration Laboratory [5]辽宁大学物理系,沈阳110036

出　　处：《高能物理与核物理》2001年第11期1035-1043,共9页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 1980 50 0 9;199914 80 ;1982 5116 )资助~~

摘　　要：对Lund弦碎裂模型强子化面积定律严格求解 ,得到e+ e- 湮没产生少体初始强子态的遍举分布 .基于面积定律的新产生子LUARLW在 2— 5GeV能区的模拟结果与BES数据的多种谱分布符合很好 。The well known Monte Carlo simulation package JETSET is developed to simulate the hadronic final states in e +e - collision with center of mass energy E cm 10GeV,but not suitable for few GeV energy region. We develop a Monte Carlo program, LUARLW,which can well simulate two body up to six body hadronic final states at BEPC energy region. In LUARLW,the effects of all gluonic emissions are neglected. The LUARLW produces more than 14 distributions,which agree with the BES data very well. This package is used for estimating hadronic events detection efficiencies in the measurements of total cross section of hadron production at BES between 2\_5 GeV.

关 键 词：弦碎裂 强子化 探测效率 Lund面积定律 R值测量 

分 类 号：O572[理学—粒子物理与原子核物理]