Observation of Correlated Azimuthal Anisotropy Fourier Harmonics in pp and p+Pb Collisions at the LHC

CMS Collaboration

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    64 Citations (Scopus)

    Abstract

    The azimuthal anisotropy Fourier coefficients (vn) in 8.16 TeV p+Pb data are extracted via long-range two-particle correlations as a function of the event multiplicity and compared to corresponding results in pp and PbPb collisions. Using a four-particle cumulant technique, vn correlations are measured for the first time in pp and p+Pb collisions. The v2 and v4 coefficients are found to be positively correlated in all collision systems. For high-multiplicity p+Pb collisions, an anticorrelation of v2 and v3 is observed, with a similar correlation strength as in PbPb data at the same multiplicity. The new correlation results strengthen the case for a common origin of the collectivity seen in p+Pb and PbPb collisions in the measured multiplicity range.

    Original languageEnglish
    Article number092301
    JournalPhysical review letters
    Volume120
    Issue number9
    DOIs
    Publication statusPublished - 2018 Feb 26

    Bibliographical note

    Publisher Copyright:
    © 2018 CERN.

    ASJC Scopus subject areas

    • General Physics and Astronomy

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