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Observation of correlated azimuthal anisotropy Fourier harmonics in pp and pPb collisions at the LHC

The CMS collaboration
No Journal Information, 2017

Abstract
The azimuthal anisotropy Fourier coefficients ($v_n$) in 8.16 TeV pPb data are extracted via long-range two-particle correlations as a function of event multiplicity and compared to corresponding results in pp and PbPb collisions. Using a four-particle cumulant technique, $v_n$ correlations are measured for the first time in pp and pPb collisions. The $v_2$ and $v_4$ coefficients are found to be positively correlated in all collision systems. For high multiplicity pPb collisions an anticorrelation of $v_2$ and $v_3$ 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 pPb and PbPb collisions in the measured multiplicity range.

  • Table 1

    Data from Figure 1

    10.17182/hepdata.79667.v1/t1

    The $v_{n}$ result from 2-particle correlation as a function of multiplicity ($N_{trk}^{offline}$) in PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV....

  • Table 2

    Data from Figure 1

    10.17182/hepdata.79667.v1/t2

    The $v_{n}$ result from 2-particle correlation as a function of multiplicity ($N_{trk}^{offline}$) in pPb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV....

  • Table 3

    Data from Figure 1

    10.17182/hepdata.79667.v1/t3

    The $v_{4}$ result from 2-particle correlation as a function of multiplicity ($N_{trk}^{offline}$) in pp collisions at $\sqrt{s}$ = 13.00 TeV....

  • Table 4

    Data from Figure 2

    10.17182/hepdata.79667.v1/t4

    The Symmetric cumulant $SC(n,m)$ results as a function of multiplicity ($N_{trk}^{offline}$) in PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.

  • Table 5

    Data from Figure 2

    10.17182/hepdata.79667.v1/t5

    The Symmetric cumulant $SC(n,m)$ results as a function of multiplicity ($N_{trk}^{offline}$) in pPb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV.

  • Table 6

    Data from Figure 2

    10.17182/hepdata.79667.v1/t6

    The Symmetric cumulant $SC(n,m)$ results as a function of multiplicity ($N_{trk}^{offline}$) in pp collisions at $\sqrt{s}$ = 13.0 TeV.

  • Table 7

    Data from Figure 3

    10.17182/hepdata.79667.v1/t7

    The Normalized Symmetric cumulant $NSC(n,m)$ results as a function of multiplicity ($N_{trk}^{offline}$) in PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV....

  • Table 8

    Data from Figure 3

    10.17182/hepdata.79667.v1/t8

    The Normalized Symmetric cumulant $NSC(n,m)$ results as a function of multiplicity ($N_{trk}^{offline}$) in pPb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV....

  • Table 9

    Data from Figure 3

    10.17182/hepdata.79667.v1/t9

    The Normalized Symmetric cumulant $NSC(n,m)$ results as a function of multiplicity ($N_{trk}^{offline}$) in pp collisions at $\sqrt{s}$ = 13.0 TeV....

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