Azimuthal Correlations and Mixed Higher Order Flow Harmonics from CMS at the LHC

Abstract

Two-particle correlations measurements of v n (n=2-4) in 8.16 TeV pPb collisions, and event-by-event correlations of different v n measured using symmetric cumulants in 13 TeV pp, 5.02 and 8.16TeV pPb and 5.02 TeV PbPb collisions at the LHC. These new results give important insights to the origin of collectivity observed in small collision systems. Additionally, using the scalar product method and the method of two-particle correlations, the mixed higher order flow harmonics and extracted nonlinear response coefficients of charged particles are measured for the first time as a function of p T and centrality in 2.76 and 5.02 TeV PbPb collisions. The obtained results are compared with different theoretical predictions. Presented at ExQCD2017 Excited QCD 2017Azimuthal correlations and mixed higher order flow harmonics from CMS at the LHC * Milan StojanovicOn behalf of the CMS collaboration VINCA Institute of Nuclear Sciences, University of Belgrade, Serbia Two-particle correlations measurements of v n (n=2-4) in 8.16 TeV pPb collisions, and event-by-event correlations of different v n are measured using symmetric cumulants in 13 TeV pp, 5.02 and 8.16TeV pPb and 5.02 TeV PbPb collisions at the LHC. These new results give important insights to the origin of collectivity observed in small collision systems. Additionally, using the scalar product method and the method of two-particle correlations, the mixed higher order flow harmonics and extracted nonlinear response coefficients of charged particles are measured for the first time as a function of p T and centrality in 2.76 and 5.02 TeV PbPb collisions. The obtained results are compared with different theoretical predictions.