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首页> 外文期刊>Physics letters >Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at class='math'>sNN=2.76 TeV
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Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at class='math'>sNN=2.76 TeV

机译:在 class =“math”> s nn < / mi> = 2.76 TEV

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Experimental results are presented on event-by-event net-proton fluctuation measurements in Pb–Pb collisions at sNN=2.76 TeV, recorded by the ALICE detector at the CERN LHC. These measurements have as their ultimate goal an experimental test of Lattice QCD (LQCD) predictions on second and higher order cumulants of net-baryon distributions to search for critical behavior near the QCD phase boundary. Before confronting them with LQCD predictions, account has to be taken of correlations stemming from baryon number conservation as well as fluctuations of participating nucleons. Both effects influence the experimental measurements and are usually not considered in theoretical calculations. For the first time, it is shown that event-by-event baryon number conservation leads to subtle long-range correlations arising from very early interactions in the collisions.
机译:在SNN = 2.76 TEV的PB-PB碰撞中的事件逐个净质子波动测量中提出了实验结果,该禁区由CERN LHC的Alice探测器记录。这些测量作为其最终目标的终端目的是网格QCD(LQCD)预测的NET-Baryon分布的第二和高阶累积物预测,以搜索QCD相边界附近的临界行为。在面对LQCD预测之前,必须考虑来自Baryon Number Perveration的源点的相关性以及参与核子的波动。这两种影响都影响了实验测量,并且通常不考虑在理论计算中。首次首次显示,逐个事件的Baryon数守恒导致来自碰撞中非常早期的相互作用产生的微妙的远程相关性。

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    《Physics letters 》 |2020年第2期| 共10页
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