Centrality-dependent double-differential transverse momentum spectra of negatively charged particles (π⁻, K⁻, and ) at the mid(pseudo)rapidity interval in nuclear collisions are analyzed by the standard distribution in terms of multicomponent. The experimental data measured in gold-gold (Au-Au) collisions by the PHENIX Collaboration at the Relativistic Heavy Ion Collider (RHIC) and in lead-lead (Pb-Pb) collisions by the ALICE Collaboration at the Large Hadron Collider (LHC) are studied. The effective temperature, initial temperature, kinetic freeze-out temperature, transverse flow velocity, and kinetic freeze-out volume are extracted from the fitting to transverse momentum spectra. We observed that the mentioned five quantities increase with the increase of event centrality due to the fact that the average transverse momentum increases with the increase of event centrality. This renders that larger momentum (energy) transfer and further multiple scattering had happened in central centrality.

中文翻译：

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温度和动力学冻结体积对高能Au-Au和Pb-Pb碰撞中中心性的依赖

带负电粒子的中心性依赖性双微分横向动量光谱（π ^- ，ķ ^- ，和）通过多组分的标准分布分析了核碰撞中（伪）快速间隔的时间间隔。实验数据是通过相对论重离子对撞机（RHIC）的PHENIX协作在金-金（Au-Au）碰撞中以及大型强子对撞机（LHC）的ALICE协作在铅-铅（Pb-Pb）碰撞中测量的。被研究。从拟合到横向动量谱中提取有效温度，初始温度，动力学冻结温度，横向流速和动力学冻结体积。我们观察到，由于平均横向动量随事件中心度的增加而增加，上述五个量随事件中心度的增加而增加。