通过3粒子$Δη-Δη$关联确定脊的基本物理
Identifying the underlying physics of the ridge via 3-particle $Δη-Δη$ correlations
摘要：
本文给出了STAR实验测量的最小偏置$d$ +Au、外围和中心Au+Au碰撞在$\sqrt{{\it s}_{NN}}$ = 200 GeV时的3粒子$Δη$关联的第一个结果.详细描述了分析技术。在中心Au+Au碰撞的双强子关联中，在大$Δη$处观察到的脊粒子，在3粒子关联中，似乎均匀地分布在测量的$Δη$ - $Δη$区域。这些结果，加上理论模型，应该有助于我们进一步了解脊的基本物理。
英文摘要：
We present the first results on 3-particle $Δη$-$Δη$ correlations in minimum bias $d$+Au, peripheral and central Au+Au collisions at $\sqrt{{\it s}_{NN}}$ = 200 GeV measured by the STAR experiment. The analysis technique is described in detail. The ridge particles, observed at large $Δη$ in dihadron correlations in central Au+Au collisions, appear to be uniformly distributed over the measured $Δη$-$Δη$ region in 3-particle correlation. The results, together with theoretical models, should help further our understanding of the underlying physics of the ridge.
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