Collision-energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton, and net-kaon multiplicity distributions in Au + Au collisions

The STAR collaboration
Phys.Rev.C 100 (2019) 014902, 2019.

Abstract (data abstract)
We report the first measurements of a complete second-order cumulant matrix of net-charge, net-proton and net-kaon multiplicity distributions for the first phase of the beam energy scan programat RHIC. This includes the centrality and, for the first time, the pseudorapidity window dependenceof both diagonal and off-diagonal cumulants in Au+Au collisions atthe available acceptance of |η| < 0.5, the cumulants grow linearly with the pseudorapidity window. Relative to the corresponding measurements in peripheral collisions, the ratio of off-diagonal over √sNN = 7.7-200 GeV. Within 2 diagonal cumulants in central collisions indicates an excess correlation between net-charge and net-kaon, as well as between net-charge and net-proton. The strength of such excess correlation increasewith the collision energy. The correlation between net-proton and net-kaon multiplicity distributions √sNN = 200 GeV and change to positive at the lowest collision energy. Model calculations based on non-thermal (UrQMD) and thermal (HRG) production of hadrons cannot explain the data. These measurements will help map the QCD phase diagram, constrain hadron resonance gas model calculations and provide new insights on the energy dependence of is observed to be negative at baryon-strangeness correlations.

  • Table 2

    10.17182/hepdata.105908.v2/t1

    The dependence of efficiency corrected second-order diagonal and off-diagonal cumulants on the width of the η-window. The filled and open...

  • Table 3.1

    10.17182/hepdata.105908.v2/t2

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.2

    10.17182/hepdata.105908.v2/t3

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.3

    10.17182/hepdata.105908.v2/t4

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.4

    10.17182/hepdata.105908.v2/t5

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.5

    10.17182/hepdata.105908.v2/t6

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.6

    10.17182/hepdata.105908.v2/t7

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.7

    10.17182/hepdata.105908.v2/t8

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 3.8

    10.17182/hepdata.105908.v2/t9

    Centrality dependence of efficiency corrected second-order diagonal cumulants of net-proton, net-kaon and net-pion (top to bottom) of the multiplicity distributions...

  • Table 4.1

    10.17182/hepdata.105908.v2/t10

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.2

    10.17182/hepdata.105908.v2/t11

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.3

    10.17182/hepdata.105908.v2/t12

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.4

    10.17182/hepdata.105908.v2/t13

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.5

    10.17182/hepdata.105908.v2/t14

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.6

    10.17182/hepdata.105908.v2/t15

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.7

    10.17182/hepdata.105908.v2/t16

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 4.8

    10.17182/hepdata.105908.v2/t17

    Centrality dependence of second-order off-diagonal cumulants of net-proton, net-charge and net-kaon for Au+Au colli-sions at √sNN = 7.7, 11.5, 14.5,...

  • Table 5.1

    10.17182/hepdata.105908.v2/t18

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.2

    10.17182/hepdata.105908.v2/t19

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.3

    10.17182/hepdata.105908.v2/t20

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.4

    10.17182/hepdata.105908.v2/t21

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.5

    10.17182/hepdata.105908.v2/t22

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.6

    10.17182/hepdata.105908.v2/t23

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.7

    10.17182/hepdata.105908.v2/t24

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 5.8

    10.17182/hepdata.105908.v2/t25

    Centrality dependence of second-order off-diagonal to diagonal cumulants ratios of net-proton, identified net-charge and net-kaon for Au+Au collisions at √sNN...

  • Table 6

    10.17182/hepdata.105908.v2/t26

    Beam energy dependence of cumulant ratios (Cp,k,CQ,k and CQ,p; top to bottom) of net-proton, net-kaon and identified net-charge for Au+Au...

Version 2 modifications: Erratum - Phys. Rev. C 105, 029901 (2022)

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