Event-plane-dependent dihadron correlations with harmonic $v_n$ subtraction in Au + Au collisions at $\sqrt{s_{NN}}=200$ GeV

The STAR collaboration
Phys.Rev.C 89 (2014) 041901, 2014.

Abstract
STAR measurements of dihadron azimuthal correlations ($\Delta\phi$) are reported in mid-central (20-60\%) Au+Au collisions at $\sqrt{s_{_{\rm NN}}}=200$ GeV as a function of the trigger particle's azimuthal angle relative to the event plane, $\phi_{s}=|\phi_{t}-\psi_{\rm EP}|$. The elliptic ($v_2$), triangular ($v_3$), and quadratic ($v_4$) flow harmonic backgrounds are subtracted using the Zero Yield At Minimum (ZYAM) method. The results are compared to minimum-bias d+Au collisions. It is found that a finite near-side ($|\Delta\phi|<\pi/2$) long-range pseudorapidity correlation (ridge) is present in the in-plane direction ($\phi_{s}\sim 0$). The away-side ($|\Delta\phi|>\pi/2$) correlation shows a modification from d+Au data, varying with $\phi_{s}$. The modification may be a consequence of pathlength-dependent jet-quenching and may lead to a better understanding of high-density QCD.

  • Table for Figure 1 raw correlation, slice 0

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    raw correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

  • Table for Figure 1 raw correlation, slice 1

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    raw correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

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    raw correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

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    raw correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

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    raw correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    raw correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

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    flow background with default flow, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

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    flow background with default flow, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

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    flow background with default flow, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

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    flow background with default flow, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

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    flow background with default flow, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    flow background with default flow, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

  • Table for Figure 1 upper flow systematic uncertainty, slice 0

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    flow background with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

  • Table for Figure 1 upper flow systematic uncertainty, slice 1

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    flow background with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

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    flow background with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

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    flow background with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

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    flow background with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    flow background with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

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    flow background with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

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    flow background with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

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    flow background with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

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    flow background with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

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    flow background with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    flow background with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

  • Table for Figure 2 background-subtracted correlation, slice 0

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    background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

  • Table for Figure 2 background-subtracted correlation, slice 1

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    background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

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    background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

  • Table for Figure 2 background-subtracted correlation, slice 3

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    background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

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    background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

  • Table for Figure 2 upper flow systematic uncertainty, slice 0

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    background-subtracted correlation with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

  • Table for Figure 2 upper flow systematic uncertainty, slice 1

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    background-subtracted correlation with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

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    background-subtracted correlation with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

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    background-subtracted correlation with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

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    background-subtracted correlation with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    background-subtracted correlation with upper flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

  • Table for Figure 2 lower flow systematic uncertainty, slice 0

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    background-subtracted correlation with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

  • Table for Figure 2 lower flow systematic uncertainty, slice 1

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    background-subtracted correlation with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

  • Table for Figure 2 lower flow systematic uncertainty, slice 2

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    background-subtracted correlation with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

  • Table for Figure 2 lower flow systematic uncertainty, slice 3

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    background-subtracted correlation with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

  • Table for Figure 2 lower flow systematic uncertainty, slice 4

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    background-subtracted correlation with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

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    background-subtracted correlation with lower flow systematic uncertainty, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

  • Table for Figure 2 systematic uncertainty band, slice 0

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    background normalization systematic uncertainty band, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 0.

  • Table for Figure 2 systematic uncertainty band, slice 1

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    background normalization systematic uncertainty band, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 1.

  • Table for Figure 2 systematic uncertainty band, slice 2

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    background normalization systematic uncertainty band, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 2.

  • Table for Figure 2 systematic uncertainty band, slice 3

    10.17182/hepdata.97120.v1/t46

    background normalization systematic uncertainty band, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 3.

  • Table for Figure 2 systematic uncertainty band, slice 4

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    background normalization systematic uncertainty band, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 4.

  • Table for Figure 2 systematic uncertainty band, slice 5

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    background normalization systematic uncertainty band, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1, slice 5.

  • Table for Figure 2 d+Au background-subtracted correlation

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    d+Au background-subtracted correlation, Au+Au 200 GeV, 20-60%, 3<p_{T}^{(t)}<4 GeV/c, 1<p_{T}^{(a)}<2 GeV/c, |#eta|<1.

  • Table for Figure 3(a) jet yield from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(a) ridge yield from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(a) pi-region yield from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(a) cone yield from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(b) jet sigma from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(b) ridge sigma from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(b) cone sigma from fit

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(c) cone peak centroid

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    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

  • Table for Figure 3(c) cone peak centroid (2-cone-Gaus fit)

    10.17182/hepdata.97120.v1/t58

    Parameters of Gaussian fit to the background subtracted dihadron correlations as a function of phi_s.

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