论文标题
$λ$和$ \barλ$来自核心模型的全球两极分化
$Λ$ and $\barΛ$ global polarization from the core-corona model
论文作者
论文摘要
我们报告了旨在使用核心 - 科罗纳纳模型在重合离子碰撞环境中描述$λ$和$ \barλ$全球极化的工作，其中这些超音龙的来源是高密度核心和较少密度的电晕。我们表明，极化激发功能的整体属性可以与$λ$ s的相对丰度和$ \ \barλ$ S的相对丰度相关，来自核心与来自Corona的核心相比。碰撞能量的两个全局极化峰值$ \ sqrt {s_ {nn}} \ Lessim 10 $ GEV。这些峰的确切位置和高度不仅取决于碰撞能量的相对丰度的逆转，而且还取决于中心级别的相对阶层，这都是与QGP体积和寿命有关的。
We report on work aimed to describe the $Λ$ and $\barΛ$ global polarizations in a heavy-ion collision environment using the core-corona model, where the source of these hyperons is a high-density core and a less dense corona. We show that the overall properties of the polarization excitation functions can be linked to the relative abundance of $Λ$s and $\barΛ$s coming from the core versus those coming from the corona. Both global polarizations peak at collision energies $\sqrt{s_{NN}} \lesssim 10$ GeV. The exact positions and heights of these peaks depend not only on a reversal of relative abundances with collision energy, but also on the centrality class, both related to the QGP volume and lifetime.
