Multiparticle correlation studies in pPb collisions at √SNN=8.16 TeV
Author(s)
CMS Collaboration; Abercrombie, Daniel Robert; Allen, B.; Azzolini, Virginia; Bi, R.; Brandt, S.; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Harris, P.; Hsu, D.; Hu, M.; Iiyama, Yutaro; Klute, Markus; Kovalskyi, Dmytro; Lee, Y. -J.; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, S.; Niu, X.; Paus, Christoph M. E.; Rankin, Dylan S.; Roland, Christof E; Roland, Gunther M; Shi, Z.; Stephans, George S. F.; Sumorok, Konstanty C; Tatar, Kaya; Velicanu, Dragos Alexandru; Wang, J.; Wang, T. W.; Wyslouch, Boleslaw; ... Show more Show less
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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 √NN=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 v[subscript 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.
Date issued
2020-01-23Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review C
Publisher
American Physical Society
Citation
CMS Collaboration (Sirunyan, A., et al.), "Multiparticle correlation studies in pPb collisions at √SNN=8.16 TeV." Physical Review C 101 (Jan. 2020): no. 014912 doi http://dx.doi.org/10.1103/PhysRevC.101.014912 ©2020 Author(s)
Version: Author's final manuscript
ISSN
2469-9993
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