地核与日冕相遇：解释半中心重离子碰撞中Lambda和反Lambda全球极化的双分量源
Core meets corona: a two-component source to explain Lambda and anti-Lambda global polarization in semi-central heavy-ion collisions
摘要：
我们计算了半中心重离子碰撞中的Lambda和反Lambda全局极化，将源建模为由高密度核和低密度日冕组成。我们表明，当更多的拉姆达比反拉姆达产生的电晕，这是与来自核心的拉姆达的数量较少的相结合，相比，来自电晕，放大效应的反拉姆达相对于拉姆达极化可以发生。这种放大对于较低的碰撞能量变得更加重要，并且定量地解释了由STAR光束能量扫描测量的λ和反λ偏振。
英文摘要：
We compute the Lambda and anti-Lambda global polarization in semi-central heavy-ion collisions modeling the source as consisting of a high-density core and a less dense corona. We show that when more Lambdas than anti-Lambdas are produced in the corona, and this is combined with a smaller number of Lambdas coming from the core, as compared to those coming from the corona, an amplification effect for the anti-Lambda with respect to that of Lambda polarization can occur. This amplification becomes more important for lower collision energies and quantitatively accounts for the Lambda and anti-Lambda polarizations measured by the STAR beam energy scan.
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