Date: 4 September 2025
Tag: sPH-CONF-JET-2025-05
Document: Conference Note
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Figure 1 
Examples of the combinatoric background subtraction procedure for selected pT,1 ⊗ pT,2 ranges and centralities. Shown are the Δφ distributions for exclusive dijet pairs (black points) and inclusive pairs separated by |Δη| > 0.8 (blue points). The lower magenta curve shows the Fourier fit to the inclusive distribution which is used to set the Δφ shape, and the upper red curve shows the estimated background in the exclusive distribution, including in the signal region Δφ > 7π/8 (shaded pink). See text for details. |
Figure 2 
Response matrix for Pythia jets embedded into Hijing Au+Au background, shown for 0-10% events. The x- and y-axis indices correspond to reco- and truth-particle level pT,1 ⊗ pT,2 bins. The entries in each bin are shown on a logarithmic scale. |
Figure 3 
Summary of the magnitudes of different systematic uncertainty components and the total uncertainty for the xJ measurement in 0-10% (left) and 30-50% (right) Au+Au collisions. |
Figure 4 
Fully unfolded xJ distributions of dijet events are shown for different Au+Au collision centrality intervals in each panel: 0-10%, 10-30%, 30-50%, and 50-90%. The xJ distributions in p+p collisions and in Pythia are shown on each panel with matching kinematic selections. For the data distributions, statistical uncertainties are shown as vertical lines and systematic uncertainties as filled boxes. |
Figure 5 
Fully unfolded xJ distributions of dijet events are shown for different Au+Au collision centrality intervals, 0-10%, 10-30%, 30-50%, and 50-90%, and for p+p collisions with the matching kinematic selections. Statistical uncertainties are shown as vertical lines and systematic uncertainties as filled boxes. The data points are slightly displaced horizontally within their uncertainty boxes for visibility. The 30-50% centrality interval marks the bin center. The statistical error bars for the p+p result are smaller than the markers, so they are omitted from the figure. |
Figure 6 
Fully unfolded xJ distributions of dijet events are shown for different Au+Au collision centrality intervals in each panel: 0-10%, 10-30%, 30-50%, and 50-90%. The xJ distributions in p+p collisions are shown on each panel with the matching kinematic selections. For the data distributions, statistical uncertainties are shown as vertical lines and systematic uncertainties as filled boxes. Also shown are the predictions for p+p collisions from the JEWEL + Pythia-6 vacuum baseline, and JEWEL + Pythia-6 medium results using the ``4MomSub'' recoil subtraction scheme. |
Figure 7 
Fully unfolded xJ distributions of dijet events are shown for the Au+Au centrality interval 0-10%, and for p+p collisions with the matching kinematic selections. Statistical uncertainties are shown as vertical lines and systematic uncertainties as filled boxes. Also shown are Hybrid Model calculations with and without elastic scattering and wake effects (colored bands). |
Figure 5 Alternatives 
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