Abstract

Correlations between multiplicity of charge particles and mean transverse momentum was observed experimentally in p + p collisions from top SPS energy to LHC energy. The change of the correlation function’s shape with collision energy was successfully described by the multi-pomeron exchange model as an interplay of string fusion and energy-momentum conservation. The situation at lower collision energies where role of resonance decays would increase can be studied by the NA61/SHINE experiment at SPS and by the forthcoming MPD experiment at NICA. In prior to the experimental analysis the phenomenon was studied using Monte Carlo event generators. In this contribution Monte-Carlo simulations results will be presented for the pt-n correlation function. The role of limited experimental acceptances of NA61/SHINE and MPD facilities will be discussed.

中文翻译：

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NICA 和 SPS 能量范围中的横向动量和多重性相关性

摘要

在从顶部 SPS 能量到 LHC 能量的p + p碰撞中，实验观察到电荷粒子的多样性和平均横向动量之间的相关性。多波子交换模型成功地将相关函数形状随碰撞能量的变化描述为弦聚变和能量-动量守恒的相互作用。可以通过 SPS 的 NA61/SHINE 实验和即将在 NICA 进行的 MPD 实验来研究在较低碰撞能量下共振衰减的作用会增加的情况。在实验分析之前，使用蒙特卡洛事件发生器研究了该现象。在此贡献中，将针对pt-n提供蒙特卡罗模拟结果相关函数。将讨论 NA61/SHINE 和 MPD 设施的有限实验验收的作用。