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On multiplicity and transverse-momentum correlations in collisions of ultrarelativistic ions

机译：超相对论离子碰撞中的多重动量和横向动量相关

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摘要

A theoretical description of long-range correlations between observables measured in separated rapidity intervals for nucleus-nucleus collisions at high energies is given. With allowance for an actual distribution of nucleons in nuclei, the p (t) n and nn correlation functions and respective correlation coefficients are calculated at various values of the impact parameter. It is shown that fluctuations of the impact parameter at a level of 1 fm, which are irremovable in experiments, affect the correlation coefficients substantially. It is shown that p (t) n correlations become much more pronounced upon going over from the SPS to the RHIC and LHC energies. The p (t) n and nn correlation functions calculated for the minimumbias case (that is, without selection in centrality) are compared with experimental data on PbPb collisions at the SPS energies.
机译：给出了在高能量下原子核-核碰撞以分开的速度间隔测量的可观测物之间的长期相关性的理论描述。考虑到核子在核中的实际分布，在碰撞参数的各种值下计算p（t）n和nn相关函数以及各自的相关系数。结果表明，冲击参数在1 fm的水平上的波动（在实验中是无法消除的）会极大地影响相关系数。结果表明，从SPS转换到RHIC和LHC能量时，p（t）n相关性变得更加明显。将针对最小偏差情况（即不选择中心性）计算出的p（t）n和nn相关函数与关于SPS能量下PbPb碰撞的实验数据进行比较。

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