400GeV/c pp碰撞中的非热相跃迁  

Non-thermal Phase Transition in pp Collisions at 400 GeV/c

作　　者：王韶舜[1] 刘冉[1] 汪兆民[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》1999年第9期841-845,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!19675033

摘　　要：利用CERNNA27合作组提供的LEBC泡室照片测量了400GeV／cpp碰撞产生的带电粒子赝快度分布．利用星形积分法计算标度阶乘矩Fq直至q＝7．分析结果表明可能存在非热相跃迁和两种不同的多粒子产生方式．观察到涨落的多重分形结构支持粒子产生的随机级联模型．The pseudorapidity distribution for charged prides Produced in PP collisions at 400GeV/c has been measured by using the LEBC films offered by the CERN NA27 collaboration. The fastorial moments up to q=7 have been calculated by star integer method. The analytic results indicate that a non-thermal phase transition and two different regimes of multiparticle production may exist. The multifractal structure of the fluctuation has been observed supporting the random cascade model of particle production.

关 键 词：非热相跃迁 分形性 尖峰事例 高能粒子碰撞 

分 类 号：O572.2[理学—粒子物理与原子核物理]