400GeV／c　pp碰撞赝快度分布测量和粒子数密度的研究  

Measurement of Pseudorapidity Distributions and Study of Particle Number Densities in pp Collisions at 400 GeV/c

作　　者：王韶舜 张杰 肖臣国 熊伟军 夏小娟 钟宇 

出　　处：《中国科学技术大学学报》1994年第2期230-235,共6页JUSTC

基　　金：国家自然科学基金

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多重数为４～２４的赝快度分布；观察到在选择的赝快度窗口中（△η＝０．５和０．１）平均最大带电粒子数密度随带电粒子多重数线性增加的规律，没有观察到最大粒子数密度反常高的事例．The pseudorapidity distributions for charged particle multiplicity 4-24 produced in pp collisions at 400GeV/c have been measured by using LEBC films offered by CERN NA27 Collaboration.The regularity is observed that the average maximum charged particle number denSity in a selectedpeudorapidity window (Δη=0. 5 or 0.1) rises linearly with the charged particle multiplicity. But theevent that the maximum particle density is anomalously high is not observed.

关 键 词：赝快度 粒子数密度 强子 碰撞 

分 类 号：O572.243[理学—粒子物理与原子核物理]