"Table 166" of "Measurements of $t\bar{t}$ differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in $pp$ collisions at $\sqrt{s}=13\,$ TeV using the ATLAS detector"

Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and $t\bar{t}$ system kinematic observables using proton--proton collisions at a center-of-mass energy of $\sqrt{s} = 13$ TeV. The data set corresponds to an integrated luminosity of $36.1$ fb$^{-1}$, recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Events with two large-radius jets in the final state, one with transverse momentum $p_{\rm T} > 500$ GeV and a second with $p_{\rm T} > 350$ GeV, are used for the measurement. The top-quark candidates are separated from the multijet background using jet substructure information and association with a $b$-tagged jet. The measured spectra are corrected for detector effects to a particle-level fiducial phase space and a parton-level limited phase space, and are compared to several Monte Carlo simulations by means of calculated $\chi^2$ values. The cross-section for $t\bar{t}$ production in the fiducial phase-space region is $292 \pm 7 \rm{(stat)} \pm 76 \rm{(syst)}$ fb, to be compared to the theoretical prediction of $384 \pm 36$ fb.

本数据集针对质心系能量$sqrt{s}=13$ TeV的质子-质子碰撞实验，测量了成对产生的高动量增强顶夸克的微分截面，分析可观测量涵盖顶夸克自身以及顶夸克对（$tar{t}$）系统的运动学特性。实验数据取自欧洲核子研究中心（CERN）大型强子对撞机（Large Hadron Collider, LHC）上的ATLAS探测器（ATLAS detector）于2015年至2016年间采集的样本，其积分亮度为$36.1 mathrm{fb}^{-1}$。本次测量选取末态包含两个大半径喷注的事例：其中一个喷注的横向动量$p_{
m T} > 500 mathrm{GeV}$，另一个喷注的横向动量$p_{
m T} > 350 mathrm{GeV}$。通过喷注子结构信息以及与b标记喷注的关联，可将顶夸克候选事例与多喷注本底有效区分。针对测量得到的能谱，我们校正了探测器效应，将其修正至粒子层次 fiducial相空间（fiducial phase space）与部分子层次受限相空间（parton-level limited phase space），并通过计算得到的$chi^2$值与多款蒙特卡洛模拟（Monte Carlo simulations）结果进行比对。在该fiducial相空间区域内，顶夸克对产生的截面测量结果为$292 pm 7 mathrm{(stat)} pm 76 mathrm{(syst)} mathrm{fb}$，可供与理论预言值$384 pm 36 mathrm{fb}$进行比对。