Multiparticle correlation studies in pPb collisions at $\sqrt{s_\mathrm{NN}} =$ 8.16 TeV

The CMS collaboration
Phys.Rev. C101 (2020) 014912, 2020

Abstract (data abstract)
The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at $\sqrt{s_{_{\mathrmNN)}}}=8.16\text{TeV}$, 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 $\sqrt{s_{_{\mathrmNN)}}}=5.02\text{TeV}$ 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.

  • Table 1

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t1

    $v_2\{4\}$ as a function of $N_{trk}^{offline}$ in PbPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV.

  • Table 2

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t2

    $v_2\{6\}$ as a function of $N_{trk}^{offline}$ in PbPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV.

  • Table 3

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t3

    $v_2\{8\}$ as a function of $N_{trk}^{offline}$ in PbPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV.

  • Table 4

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t4

    $v_3\{4\}$ as a function of $N_{trk}^{offline}$ in PbPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV.

  • Table 5

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t5

    $v_2\{4\}$ as a function of $N_{trk}^{offline}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 6

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t6

    $v_2\{6\}$ as a function of $N_{trk}^{offline}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 7

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t7

    $v_2\{6\}$ as a function of $N_{trk}^{offline}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 8

    Data from Fig. 1

    10.17182/hepdata.88288.v1/t8

    $v_3\{4\}$ as a function of $N_{trk}^{offline}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 9

    Data from Fig. 2

    10.17182/hepdata.88288.v1/t9

    $v_2\{4\}/v_2\{2\}$ as a function of $N_{trk}^{offline}$ in PbPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV.

  • Table 10

    Data from Fig. 2

    10.17182/hepdata.88288.v1/t10

    $v_3\{4\}/v_3\{2\}$ as a function of $N_{trk}^{offline}$ in PbPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV.

  • Table 11

    Data from Fig. 2

    10.17182/hepdata.88288.v1/t11

    $v_2\{4\}/v_2\{2\}$ as a function of $N_{trk}^{offline}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 12

    Data from Fig. 2

    10.17182/hepdata.88288.v1/t12

    $v_3\{4\}/v_3\{2\}$ as a function of $N_{trk}^{offline}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 13

    Data from Fig. 3

    10.17182/hepdata.88288.v1/t13

    $v_2\{6\}/v_2\{4\}$ as a function of $v_2\{4\}/v_2\{2\}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

  • Table 14

    Data from Fig. 3

    10.17182/hepdata.88288.v1/t14

    $v_2\{8\}/v_2\{6\}$ as a function of $v_2\{4\}/v_2\{2\}$ in pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV.

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