【摘要】 利用LEBC泡室照片,对400GeV/c pp碰撞产生的带电粒子赝快度分布进行了测量。得到了固定总多重数时前向半球的多重数分布;计算了金相空间、赝快度中心区以及中心区以外的前后多重数关联强度;得到了关联强度随赝快度窗口的变化图。用结团模型分析了前后关联的实验数据,结果表明,结团的平均大小与是否考虑领头粒子效应有关。更多还原

【Abstract】 The pseudo-rapidity distributions of charged particles produced in pp collisions at 400 GeV/c have been measured using LEBC films. The multiplicity distributions in forward hemisphere at fixed total multiplicities are obtained. The forward-backward multiplicity correlation strength in full phase space, central region and off-central region of the pseudo-rapidity distribution are calculated.The figures of the correlation strength versus pseudo-rapidity windows are obtained. The experimental data of the forward-backward correlation have been analyzed with cluster model. The results show that the average cluster size is dependent on whether the leading-particle effect is taken into account.更多还原