NA27数据事例空间的涨落分析  

Analysis of the Fluctuations in the Event-Space for NA27 Data

作　　者：王韶舜[1] 吴冲[1] 

机构地区：[1]中国科学技术大学近代物理系,合肥230027

出　　处：《高能物理与核物理》2002年第3期216-221,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 1 9975 0 4 5 )资助

摘　　要：利用单事例阶乘矩方法计算了NA2 7数据的事例空间矩Cp,q(M) .与纯统计涨落的蒙特卡罗事例样本的计算结果比较 ,表明Cp,q(M)随M的变化主要由统计涨落引起的 .对NA2 7数据的赝快度间隔作不稳定性分析 ,计算了类熵量Sq 和Σq,两者都显著地偏离于 1 .Sq 和Σq 随q的变化呈指数关系 .FRITIOF模拟能重现此标度行为 ,但数值偏离较大 .The event-space moments C p,q(M) have been calculated using the method of single-event factorial moments. Comparing this with the calculated results for the pure statistical fluctuations Monte-Carlo event sample, the variations of the moments C p,q(M) with M are caused dominantly by the statistical fluctuation. The erraticity analysis of the pseudorapidity gaps is performed for the NA27 data. The entropy-like quantities S q and Σ q are calculated. It is found that S q and Σ q deviate significantly from 1. S q and ∑ q versus q have exponential behavior. FRITIOF simulation can reproduce the scaling behavior, but the deviations of the values from the experimental data are rather large.

关 键 词：单事例阶乘矩 统计涨落 赝快度间隔 不稳定性 高能粒子碰撞 NA27数据 事例空间 

分 类 号：O572.21[理学—粒子物理与原子核物理]