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Multiplicity and transverse momentum evolution of charge-dependent correlations in pp, p–Pb, and Pb–Pb collisions at the LHC

The ALICE collaboration
Eur.Phys.J. C76 (2016) 86, 2016

Abstract (data abstract)
CERN-LHC. We report on two-particle charge-dependent correlations in pp, p-Pb, and Pb-Pb collisions as a function of the pseudorapidity and azimuthal angle difference, $\mathrm{\Delta}\eta$ and $\mathrm{\Delta}\varphi$ respectively. These correlations are studied using the balance function that probes the charge creation time and the development of collectivity in the produced system. The dependence of the balance function on the event multiplicity as well as on the trigger and associated particle transverse momentum ($p_{\mathrm{T}}$) in pp, p-Pb, and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 7$, 5.02, and 2.76 TeV, respectively, are presented. In the low transverse momentum region, for $0.2 < p_{\mathrm{T}} < 2.0$ GeV/$c$, the balance function becomes narrower in both $\mathrm{\Delta}\eta$ and $\mathrm{\Delta}\varphi$ directions in all three systems for events with higher multiplicity. The experimental findings favor models that either incorporate some collective behavior (e.g. AMPT) or different mechanisms that lead to effects that resemble collective behavior (e.g. PYTHIA8 with color reconnection). For higher values of transverse momenta the balance function becomes even narrower but exhibits no multiplicity dependence, indicating that the observed narrowing with increasing multiplicity at low $p_{\mathrm{T}}$ is a feature of bulk particle production.

  • Table 1

    Data from Figure 2a

    10.17182/hepdata.72546.v1/t1

    Balance function in $\Delta\eta$ 0_5%.

  • Table 2

    Data from Figure 2a

    10.17182/hepdata.72546.v1/t2

    Balance function in $\Delta\eta$ 30_40%.

  • Table 3

    Data from Figure 2a

    10.17182/hepdata.72546.v1/t3

    Balance function in $\Delta\eta$ 70_80%.

  • Table 4

    Data from Figure 2d

    10.17182/hepdata.72546.v1/t4

    Balance function in $\Delta\eta$ 0_5%.

  • Table 5

    Data from Figure 2d

    10.17182/hepdata.72546.v1/t5

    Balance function in $\Delta\eta$ 30_40%.

  • Table 6

    Data from Figure 2d

    10.17182/hepdata.72546.v1/t6

    Balance function in $\Delta\eta$ 70_80%.

  • Table 7

    Data from Figure 2g

    10.17182/hepdata.72546.v1/t7

    Balance function in $\Delta\varphi$ 0_5%.

  • Table 8

    Data from Figure 2g

    10.17182/hepdata.72546.v1/t8

    Balance function in $\Delta\varphi$ 30_40%.

  • Table 9

    Data from Figure 2g

    10.17182/hepdata.72546.v1/t9

    Balance function in $\Delta\varphi$ 70_80%.

  • Table 10

    Data from Figure 2b

    10.17182/hepdata.72546.v1/t10

    Balance function in $\Delta\eta$ 0-10%.

  • Table 11

    Data from Figure 2b

    10.17182/hepdata.72546.v1/t11

    Balance function in $\Delta\eta$ 30-40%.

  • Table 12

    Data from Figure 2b

    10.17182/hepdata.72546.v1/t12

    Balance function in $\Delta\eta$ 70-80%.

  • Table 13

    Data from Figure 2e

    10.17182/hepdata.72546.v1/t13

    Balance function in $\Delta\eta$ 0-10%.

  • Table 14

    Data from Figure 2e

    10.17182/hepdata.72546.v1/t14

    Balance function in $\Delta\eta$ 30-40%.

  • Table 15

    Data from Figure 2e

    10.17182/hepdata.72546.v1/t15

    Balance function in $\Delta\eta$ 70-80%.

  • Table 16

    Data from Figure 2h

    10.17182/hepdata.72546.v1/t16

    Balance function in $\Delta\varphi$ 0-10%.

  • Table 17

    Data from Figure 2h

    10.17182/hepdata.72546.v1/t17

    Balance function in $\Delta\varphi$ 30-40%.

  • Table 18

    Data from Figure 2h

    10.17182/hepdata.72546.v1/t18

    Balance function in $\Delta\varphi$ 70-80%.

  • Table 19

    Data from Figure 2c

    10.17182/hepdata.72546.v1/t19

    Balance function in $\Delta\eta$ 0To10%.

  • Table 20

    Data from Figure 2c

    10.17182/hepdata.72546.v1/t20

    Balance function in $\Delta\eta$ 30To40%.

  • Table 21

    Data from Figure 2c

    10.17182/hepdata.72546.v1/t21

    Balance function in $\Delta\eta$ 70To80%.

  • Table 22

    Data from Figure 2f

    10.17182/hepdata.72546.v1/t22

    Balance function in $\Delta\eta$ 0To10%.

  • Table 23

    Data from Figure 2f

    10.17182/hepdata.72546.v1/t23

    Balance function in $\Delta\eta$ 30To40%.

  • Table 24

    Data from Figure 2f

    10.17182/hepdata.72546.v1/t24

    Balance function in $\Delta\eta$ 70To80%.

  • Table 25

    Data from Figure 2i

    10.17182/hepdata.72546.v1/t25

    Balance function in $\Delta\varphi$ 0To10%.

  • Table 26

    Data from Figure 2i

    10.17182/hepdata.72546.v1/t26

    Balance function in $\Delta\varphi$ 30To40%.

  • Table 27

    Data from Figure 2i

    10.17182/hepdata.72546.v1/t27

    Balance function in $\Delta\varphi$ 70To80%.

  • Table 28

    Data from Figure 4a

    10.17182/hepdata.72546.v1/t28

    $\sigma_{\Delta\eta}$ as a function of the multiplicity class.

  • Table 29

    Data from Figure 4b

    10.17182/hepdata.72546.v1/t29

    Relative decrease of $\sigma_{\Delta\eta}$ as a function of the multiplicity class.

  • Table 30

    Data from Figure 4c

    10.17182/hepdata.72546.v1/t30

    $\sigma_{\Delta\eta}$ as a function of the multiplicity class.

  • Table 31

    Data from Figure 4d

    10.17182/hepdata.72546.v1/t31

    Relative decrease of $\sigma_{\Delta\eta}$ as a function of the multiplicity class.

  • Table 32

    Data from Figure 4e

    10.17182/hepdata.72546.v1/t32

    $\sigma_{\Delta\eta}$ as a function of the multiplicity class.

  • Table 33

    Data from Figure 4f

    10.17182/hepdata.72546.v1/t33

    Relative decrease of $\sigma_{\Delta\eta}$ as a function of the multiplicity class.

  • Table 34

    Data from Figure 5a

    10.17182/hepdata.72546.v1/t34

    $\sigma_{\Delta\varphi}$ as a function of the multiplicity class.

  • Table 35

    Data from Figure 5b

    10.17182/hepdata.72546.v1/t35

    Relative decrease of $\sigma_{\Delta\varphi}$ as a function of the multiplicity class.

  • Table 36

    Data from Figure 5c

    10.17182/hepdata.72546.v1/t36

    $\sigma_{\Delta\varphi}$ as a function of the multiplicity class.

  • Table 37

    Data from Figure 5d

    10.17182/hepdata.72546.v1/t37

    Relative decrease of $\sigma_{\Delta\varphi}$ as a function of the multiplicity class.

  • Table 38

    Data from Figure 5e

    10.17182/hepdata.72546.v1/t38

    $\sigma_{\Delta\varphi}$ as a function of the multiplicity class.

  • Table 39

    Data from Figure 5f

    10.17182/hepdata.72546.v1/t39

    Relative decrease of $\sigma_{\Delta\varphi}$ as a function of the multiplicity class.

  • Table 40

    Data from Figure 6a

    10.17182/hepdata.72546.v1/t40

    Balance function in $\Delta\eta$ 0_5%.

  • Table 41

    Data from Figure 6a

    10.17182/hepdata.72546.v1/t41

    Balance function in $\Delta\eta$ 30_40%.

  • Table 42

    Data from Figure 6a

    10.17182/hepdata.72546.v1/t42

    Balance function in $\Delta\eta$ 60_80%.

  • Table 43

    Data from Figure 6d

    10.17182/hepdata.72546.v1/t43

    Balance function in $\Delta\varphi$ 0_5%.

  • Table 44

    Data from Figure 6d

    10.17182/hepdata.72546.v1/t44

    Balance function in $\Delta\varphi$ 30_40%.

  • Table 45

    Data from Figure 6d

    10.17182/hepdata.72546.v1/t45

    Balance function in $\Delta\varphi$ 60_80%.

  • Table 46

    Data from Figure 6b

    10.17182/hepdata.72546.v1/t46

    Balance function in $\Delta\eta$ 0-10%.

  • Table 47

    Data from Figure 6b

    10.17182/hepdata.72546.v1/t47

    Balance function in $\Delta\eta$ 30-40%.

  • Table 48

    Data from Figure 6b

    10.17182/hepdata.72546.v1/t48

    Balance function in $\Delta\eta$ 70-80%.

  • Table 49

    Data from Figure 6e

    10.17182/hepdata.72546.v1/t49

    Balance function in $\Delta\varphi$ 0-10%.

  • Table 50

    Data from Figure 6e

    10.17182/hepdata.72546.v1/t50

    Balance function in $\Delta\varphi$ 30-40%.

  • Table 51

    Data from Figure 6e

    10.17182/hepdata.72546.v1/t51

    Balance function in $\Delta\varphi$ 70-80%.

  • Table 52

    Data from Figure 6c

    10.17182/hepdata.72546.v1/t52

    Balance function in $\Delta\eta$ 0To10%.

  • Table 53

    Data from Figure 6c

    10.17182/hepdata.72546.v1/t53

    Balance function in $\Delta\eta$ 30To40%.

  • Table 54

    Data from Figure 6c

    10.17182/hepdata.72546.v1/t54

    Balance function in $\Delta\eta$ 70To80%.

  • Table 55

    Data from Figure 6f

    10.17182/hepdata.72546.v1/t55

    Balance function in $\Delta\varphi$ 0To10%.

  • Table 56

    Data from Figure 6f

    10.17182/hepdata.72546.v1/t56

    Balance function in $\Delta\varphi$ 30To40%.

  • Table 57

    Data from Figure 6f

    10.17182/hepdata.72546.v1/t57

    Balance function in $\Delta\varphi$ 70To80%.

  • Table 58

    Data from Figure 7a

    10.17182/hepdata.72546.v1/t58

    Balance function in $\Delta\eta$ 0_5%.

  • Table 59

    Data from Figure 7a

    10.17182/hepdata.72546.v1/t59

    Balance function in $\Delta\eta$ 30_40%.

  • Table 60

    Data from Figure 7a

    10.17182/hepdata.72546.v1/t60

    Balance function in $\Delta\eta$ 50_60%.

  • Table 61

    Data from Figure 7c

    10.17182/hepdata.72546.v1/t61

    Balance function in $\Delta\varphi$ 0_5%.

  • Table 62

    Data from Figure 7c

    10.17182/hepdata.72546.v1/t62

    Balance function in $\Delta\varphi$ 30_40%.

  • Table 63

    Data from Figure 7c

    10.17182/hepdata.72546.v1/t63

    Balance function in $\Delta\varphi$ 50_60%.

  • Table 64

    Data from Figure 7b

    10.17182/hepdata.72546.v1/t64

    Balance function in $\Delta\eta$ 0-10%.

  • Table 65

    Data from Figure 7b

    10.17182/hepdata.72546.v1/t65

    Balance function in $\Delta\eta$ 30-40%.

  • Table 66

    Data from Figure 7b

    10.17182/hepdata.72546.v1/t66

    Balance function in $\Delta\eta$ 70-80%.

  • Table 67

    Data from Figure 7d

    10.17182/hepdata.72546.v1/t67

    Balance function in $\Delta\varphi$ 0-10%.

  • Table 68

    Data from Figure 7d

    10.17182/hepdata.72546.v1/t68

    Balance function in $\Delta\varphi$ 30-40%.

  • Table 69

    Data from Figure 7d

    10.17182/hepdata.72546.v1/t69

    Balance function in $\Delta\varphi$ 70-80%.

  • Table 70

    Data from Figure 8a

    10.17182/hepdata.72546.v1/t70

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 71

    Data from Figure 8a

    10.17182/hepdata.72546.v1/t71

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 72

    Data from Figure 8b

    10.17182/hepdata.72546.v1/t72

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 73

    Data from Figure 8b

    10.17182/hepdata.72546.v1/t73

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 74

    Data from Figure 9a

    10.17182/hepdata.72546.v1/t74

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 75

    Data from Figure 9a

    10.17182/hepdata.72546.v1/t75

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 76

    Data from Figure 9b

    10.17182/hepdata.72546.v1/t76

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 77

    Data from Figure 9b

    10.17182/hepdata.72546.v1/t77

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 78

    Data from Figure 10a

    10.17182/hepdata.72546.v1/t78

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

  • Table 79

    Data from Figure 10b

    10.17182/hepdata.72546.v1/t79

    Sigma as function of the multiplicity class for $p_{\rm{T}}$ low, intermediate, and high.

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