"Table 425" of "Measurements of top-quark pair differential and double-differential cross-sections in the $\ell$+jets channel with $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector"

Single- and double-differential cross-section measurements are presented for the production of top-quark pairs, in the lepton + jets channel at particle and parton level. Two topologies, resolved and boosted, are considered and the results are presented as a function of several kinematic variables characterising the top and $t\bar{t}$ system and jet multiplicities. The study was performed using data from pp collisions at centre-of-mass energy of 13 TeV collected in 2015 and 2016 by the ATLAS detector at the CERN Large Hadron Collider (LHC), corresponding to an integrated luminosity of 36 fb$^{−1}$. Due to the large $t\bar{t}$ cross-section at the LHC, such measurements allow a detailed study of the properties of top-quark production and decay, enabling precision tests of several Monte Carlo generators and fixed-order Standard Model predictions. Overall, there is good agreement between the theoretical predictions and the data.

本文报道了粒子层次与部分子层次下，轻子+喷注（lepton + jets）末态中顶夸克对（top-quark pairs）产生过程的单微分与双微分截面测量结果。本分析考虑了分辨型（resolved）与增强型（boosted）两种拓扑结构，并基于表征顶夸克与顶夸克-反夸克对（$tar{t}$）系统的多个运动学变量以及喷注多重数，给出了对应的测量结果。本研究基于欧洲核子研究中心（CERN）大型强子对撞机（Large Hadron Collider, LHC）上的ATLAS探测器在2015年与2016年采集的质心系能量为13 TeV的质子-质子对撞数据开展，对应积分亮度为36 fb⁻¹。鉴于大型强子对撞机上顶夸克对产生截面可观，此类测量可实现对顶夸克产生与衰变性质的精细研究，进而为多款蒙特卡洛（Monte Carlo）发生器以及固定阶标准模型（Standard Model, SM）预言提供精确检验。总体而言，理论预言与实验数据之间展现出良好的一致性。