作为热化敏感探针的重夸克动量关联
Heavy--quark momentum correlations as a sensitive probe of thermalization
摘要：
在高能核碰撞中，部分子水平的热化程度是一个关键问题。由于重夸克的大质量及其在QCD介质集体流中的参与，构成了探测热化的有力工具。我们建议测量重夸克强子及其半轻子衰变产物的方位角关联。在p-p碰撞中，初始的方位角相关性的改变甚至完全不存在，可能表明在部分子水平上的热化。我们目前的研究与PYTHIA的p-p碰撞在顶部的LHC能量使用两粒子横向动量相关${<\overlineΔp_{t,1}\overlineΔp_{t,2}>}$作为一个敏感的措施方位角的相关性。
英文摘要：
In high-energy nuclear collisions the degree of thermalization at the partonic level is a key issue. Due to their large mass, heavy-quarks and their participation in the collective flow of the QCD medium constitute a powerful tool to probe thermalization. We propose measuring azimuthal correlations of heavy-quark hadrons and products from their semi-leptonic decay. Modifications or even the complete absence of initially, e.g. in p-p collisions, existing azimuthal correlations in Pb-Pb collisions might indicate thermalization at the partonic level. We present studies with PYTHIA for p-p collisions at the top LHC energy using the two-particle transverse momentum correlator ${<\overlineΔp_{t,1}\overlineΔp_{t,2}>}$ as a sensitive measure of azimuthal correlations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
