"Prefit yields in the dilepton 2bincl region" of "Observation of $t\bar{t}$ production in the lepton+jets and dilepton channels in $p$+Pb collisions at $\sqrt{s_\mathrm{NN}}=8.16$ TeV with the ATLAS detector"

The figure shows the pre-fit distribution of events as a function of $H_{\mathrm{T}}^{\ell,j} = \sum_{\ell,j} p_{T}^{\ell,j}$, scalar sum of $p_T$ for all jets and leptons in the $\ell+$jets channel, in proton-lead (p+Pb) collisions at a center-of-mass energy of $\sqrt{s_{\mathrm{NN}}} = 8.16$ TeV, with an integrated luminosity of 165 nb\(^{-1}\) in the 2\(\ell\)2bincl signal region. The histogram represents the number of events per GeV, with the data points shown as black dots and their associated uncertainties. The stacked colored histograms indicate different processes: \(t\bar{t}\) (red), single top (orange), \(Z+b\) (dark blue), \(Z+c\) (medium blue), \(Z+\)light (light blue), diboson (gray), and fake lepton (purple). The hatched area represents the uncertainty in the predictions.

该图展示了在质心系能量（center-of-mass energy）√s_NN=8.16 TeV的质子-铅（p+Pb）碰撞中，积分亮度（integrated luminosity）为165 nb⁻¹的2ℓ2bincl信号区域内，ℓ+喷注（jet）通道中所有喷注与轻子（lepton）的横向动量（transverse momentum, p_T）的标量和$H_{mathrm{T}}^{ell,j} = sum_{ell,j} p_{mathrm{T}}^{ell,j}$作为变量的事件预拟合分布。其中，直方图表示每GeV的事件数，数据点以黑色圆点呈现并附带其对应的不确定度。堆叠彩色直方图代表不同的物理过程：顶夸克对（$tar{t}$，红色）、单顶夸克（single top，橙色）、伴随b夸克的Z玻色子产生（Z+b，深蓝色）、伴随c夸克的Z玻色子产生（Z+c，中蓝色）、伴随轻夸克的Z玻色子产生（Z+light，浅蓝色）、双玻色子过程（diboson，灰色）以及假轻子（fake lepton，紫色）。阴影区域代表理论预言的不确定度。