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Title
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Multiparticle correlation studies in pPb collisions at =8.16 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| The 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. |
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Language
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English
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Source (journal)
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PHYSICAL REVIEW C
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Publication
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2020
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DOI
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10.1103/PHYSREVC.101.014912
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Volume/pages
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101
:1
(2020)
, 17 p.
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Article Reference
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014912
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ISI
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000509493400006
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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