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Principal-component analysis of two-particle azimuthal correlations in PbPb and $p$Pb collisions at CMS
For the first time a principle-component analysis is used to separate out different orthogonal modes of the two-particle correlation matrix from heavy ion collisions. The analysis uses data from √ s N N = 2.76 TeV PbPb and √ s N N = 5.02 TeV pPb collisions collected by the CMS experiment at the CERN Large Hadron Collider. Two-particle azimuthal correlations have been extensively used to study hydrodynamic flow in heavy ion collisions. Recently it was shown that the expected factorization ofdoi:10.5167/uzh-146500 fatcat:cwmlzxd74zdxdjymabpcphbumu