摘要
本文分析了高能核-核碰撞多重数矩的能量标度无关性和与靶核质量及快度窗口宽度近似无关的性质,指出这些性质来源于核几何.在很普遍的条件下证明了,当碰撞核不很轻,快度窗口不很窄时,多重数n的归一化矩近似等于参与碰撞核子数N的归一化矩.对无偏过程和中心过程分别进行了计算,得到与实验符合的结果.
The independence or approximate independence of the multiplicity moments on energy,(?)arget mass and rapidity window in high energy nucleus-nucleus collisions are analyzed. it is pointed out that ail of these properties are due to the nuclear geometry. It is proved under very general conditions that, when the target mass is not extremely light and the rapidity window not very narrow, the normalized moments of the multiplicity are approximately equal to that of the number of participating nucleons. The calculated results for both minimum bias and central events agree well with the experimental data.
出处
《高能物理与核物理》
CSCD
北大核心
1990年第5期427-434,共8页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
