论文标题

相关函数的形状

The Shape of the Correlation Function

论文作者

Cimerman, Jakub, Plumberg, Chrisopher, Tomášik, Boris

论文摘要

在超级核碰撞中测得的相关功能是强烈的非高斯。使用两个不同的模型,我们研究的效果可以影响其形状以及多少。特别是,我们专注于借助莱维稳定分布所表达的参数化。我们表明,由于非关键效应,诸如共振衰减,事件的逐渐波动和功能依赖性,对$ q_ {li} $或类似的功能依赖性可能会大大偏离2个。我们还研究了包括一阶Lévy扩展的校正。

The correlation function measured in ultrarelativistic nuclear collisions is strongly non-Gaussian. Using two different models we study which effects can influence its shape and how much. In particular, we focus on the parametrizations expressed with the help of Lévy-stable distributions. We show that the Lévy index may deviate substantially from 2 due to non-critical effects such as resonance decays, event-by-event fluctuations and functional dependence on $Q_{LI}$ or similar. We also study the corrections including the first-order Lévy expansion.

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