论文标题
$zγ+$ $ $ $ $ jet的差异截面$ pp $ collisision in $ \ sqrt {s} = 13 $ tev带有Atlas检测器
Measurements of $Zγ+$jets differential cross sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
论文作者
论文摘要
使用$ \ \ sqrt {s} = 13 $ tev Proton-Proton碰撞的整个139 fb $^{ - 1} $数据集提出了$Zγ$生产的差异横截面测量值。分布是使用$ z $玻色子腐烂的事件测量的，通常从初始状态夸克辐射光子。在一个和两个可观察的情况下进行测量，包括对事件中的硬散射敏感的测量以及其他探测额外的软辐射和共线辐射的方法。从Parton-Shower Monte Carlo模拟和固定顺序QCD计算中进行的不同标准模型预测与测量结果进行了比较。通常，在矩阵和Minnlo $ _ \ text {ps} $的数据和预测之间观察到良好的一致性，以及MadGraph5_AMC@nlo和Sherpa的次订单预测。
Differential cross-section measurements of $Zγ$ production in association with hadronic jets are presented, using the full 139 fb$^{-1}$ dataset of $\sqrt{s}=13$ TeV proton-proton collisions collected by the ATLAS detector during Run 2 of the LHC. Distributions are measured using events in which the $Z$ boson decays leptonically and the photon is usually radiated from an initial-state quark. Measurements are made in both one and two observables, including those sensitive to the hard scattering in the event and others which probe additional soft and collinear radiation. Different Standard Model predictions, from both parton-shower Monte Carlo simulation and fixed-order QCD calculations, are compared with the measurements. In general, good agreement is observed between data and predictions from MATRIX and MiNNLO$_\text{PS}$, as well as next-to-leading-order predictions from MadGraph5_aMC@NLO and Sherpa.
