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Non-flow Correlation and Elliptic Flow in Pb+Pb Collision at √ SNN = 5.02 TeV

In this paper, it is the first time that non-flow correlations are analyzed from Large Hadron Collider using CMS detector. Data from CMS Pb-Pb Collision is analyzed, and the flow and non-flow correlations are separated and analyzed. This research can help researchers to understand the hydrodynamic characteristics of Quark-Gluon-Plasma created in LHC. Using the constructed analysis program, the correlation function graphs of Δϕ and Δη are obtained. They are further used to separate the non-flow and flow correlations. The conclusion is the flow correlations are consistent with flow of QGP, and the non-flow correlations are short ranged and most significant in region where 0.5 < |Δη| < 1.0, appearing alongside is the two peak non-flow distributions for 1.0 < |Δη| < 1.5.