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Measurements are presented by the CMS Collaboration at the Large HadronCollider (LHC) of the higher-order harmonic coefficients that describe theazimuthal anisotropy of charged particles emitted in sqrt(s[NN]) = 2.76 TeVPbPb collisions. Expressed in terms of the Fourier components of the azimuthaldistribution, the n = 3-6 harmonic coefficients are presented for chargedparticles as a function of their transverse momentum (0.3 < pt < 8.0 GeV),collision centrality (0-70%), and pseudorapidity (abs(eta) < 2.0). The data areanalyzed using the event plane, multiparticle cumulant, and Lee-Yang zerosmethods, which provide different sensitivities to initial-state fluctuations.Taken together with earlier LHC measurements of elliptic flow (n = 2), theresults on higher-order harmonic coefficients develop a more complete pictureof the collective motion in high-energy heavy-ion collisions and shed light onthe properties of the produced medium.

Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV