Yetkin, Elif Aslı2020-06-042020-06-042020-01-232469-99932469-9985https://hdl.handle.net/11411/2158https://doi.org/10.1103/PhysRevC.101.014912The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at root s(NN) = 8.16 TeV, are studied over a wide range of event multiplicities. Multiparticle correlations are used to isolate global properties stemming from the collision overlap geometry. The second-order "elliptic" harmonic moment is obtained with high precision through four-, six-, and eight-particle correlations and, for the first time, the third-order "triangular" harmonic moment is studied using four-particle correlations. A sample of peripheral PbPb collisions at root s(NN) = 5.02 TeV that covers a similar range of event multiplicities as the pPb results is also analyzed. Model calculations of initial-state fluctuations in pPb and PbPb collisions can be directly compared to the high-precision experimental results. This work provides new insight into the fluctuation-driven origin of the v(3) coefficients in pPb and PbPb collisions, and into the dominating overall collision geometry in PbPb collisions at the earliest stages of heavy ion interactions.eninfo:eu-repo/semantics/openAccessPb-pb CollisionsLong-rangeNear-sideTransverse-MomentumFlowSide Angular-CorrelationsProton-Lead CollisionsCollectivityArticle2-s2.0-8507883639510.1103/PhysRevC.101.014912Q2WOS:000509493400006