As a function of collision centrality, the multiplicity and angular distributions for the slowest target fragments (black particles) emitted in interactions of ¹⁶O ions with emulsion nuclei at 3.7AGeV were investigated. The multiplicity distribution is unaffected by the projectile’s energy or mass. At different impact parameters, the higher moments of multiplicity distributions of black particles were measured. The calculated values of the scaled variance (variance divided by the mean) show that the emission of slower target fragments at high energies is not a statistically independent process in all cases. At various projectile spectators, the angular distributions of the emitted black particles were investigated. The obtained data were compared to the statistical model’s predictions to describe the process responsible for producing secondary particles.

中文翻译：

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3.7AGeV 16O-乳液碰撞中目标黑色碎片的发射特性

作为碰撞中心性的函数，在¹⁶ O 离子与乳液核在 3.7的相互作用中发射的最慢目标碎片（黑色粒子）的多重性和角度分布一种研究了 GeV。多重分布不受射弹的能量或质量的影响。在不同的冲击参数下，测量了黑色粒子多重分布的更高矩。缩放方差（方差除以平均值）的计算值表明，在所有情况下，在高能下发射较慢的目标碎片并不是一个统计上独立的过程。在各种抛射物观众中，研究了发射的黑色粒子的角分布。将获得的数据与统计模型的预测进行比较，以描述产生次级粒子的过程。