par Sirunyan, A.M.;Beghin, Diego
;Bilin, Bugra
;Brun, Hugues
;Clerbaux, Barbara
;De Lentdecker, Gilles
;Delannoy, Hugo
;Dorney, Brian
;Fasanella, Giuseppe
;Favart, Laurent
;Grebenyuk, Anastasia
;Kalsi, Amandeep Kaur
;Lenzi, Thomas
;Luetic, Jelena
;Postiau, Nicolas
;Starling, Elizabeth Rose
;Thomas, Laurent
;Vander Velde, Catherine
;Vanlaer, Pascal
;Vannerom, David
;Wang, Qun
; [et al.]
Référence Physical Review C, 101, 1, 014912
Publication Publié, 2020-01-23




















Référence Physical Review C, 101, 1, 014912
Publication Publié, 2020-01-23
Article révisé par les pairs
Résumé : | The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at sNN=8.16TeV, 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 sNN=5.02TeV 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 v3 coefficients in pPb and PbPb collisions, and into the dominating overall collision geometry in PbPb collisions at the earliest stages of heavy ion interactions. |