| 阶乘累积矩与阶乘矩之比随相空间大小的变化 |
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| 引用本文： | 王韶舜,张杰,叶云秀,肖臣国.阶乘累积矩与阶乘矩之比随相空间大小的变化[J].中国物理 C,1996,20(9):783-788. |
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| 作者姓名： | 王韶舜 张杰 叶云秀 肖臣国 |
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| 作者单位： | 中国科学技术大学近代物理系 |
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| 摘 要： | 利用400GeV/cpp碰撞多重产生的实验数据计算了不同赝快度窗口时多重数分布的阶乘累积矩与阶乘矩之比.结果表明,随着阶数q的增加,比值Hq首先迅速下降,然后在零附近振荡.这与PQCD的预言是一致的.不同的是第一极小值的位置在赝快度窗口变小时移向较高的级数.
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| 关 键 词： | 阶乘累积矩 阶乘矩 微扰量子色动力学 多重数分布 |
The Ratio of Factorial Cumulant to Factorial Moment Versus the Size of Phase Space |
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| Wang Shaoshun,Zhang Jie,Ye Yunxiu,Xiao Chenguo.The Ratio of Factorial Cumulant to Factorial Moment Versus the Size of Phase Space[J].High Energy Physics and Nuclear Physics,1996,20(9):783-788. |
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| Authors: | Wang Shaoshun Zhang Jie Ye Yunxiu Xiao Chenguo |
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| Abstract: | The ratio of factorial cumulant to factorial moment of multiplicity distributions in different pseudorapidity windows has been calculated by using the experimental data of multiplicity production for pp collisions at 400GeV/c.The results show that the ratio Hq exhibits an initial abrupt descent and then an oscillation around zero when the order q is increased.It is coincident with the PQCD prediction.The difference is that the position of the first minimum moves to higher rank when the pseudorapidity window becomes smaller. |
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| Keywords: | factorial cumulant factorial moments perturbative quantum chromodynamics multiplicity distribution |
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