论文标题
$ \ sqrt {s} = 13〜 \ mbox {tev} $的$ pp $ collisions中全hadronic频道中的顶级对单和双分横截面的测量
Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in $pp$ collisions at $\sqrt{s}=13~\mbox{TeV}$ using the ATLAS detector
论文作者
论文摘要
使用Atlas实验收集的Proton $ - $质子碰撞事件，在全部衰减模式下测量了差异横截面，用于在全部热衰减模式下生产差异，该事件分别解决了所有六个衰减喷头。绝对和归一化的单分和双分截面在粒子和Parton水平上测量与各种运动学变量的函数。重点放在完全重建的最终状态中的可观察到的，以及对Quark对系统和事件中确定的其他喷射辐射之间相关性的研究。该研究是使用Proton $ - $ Proton碰撞的数据进行的，该数据是$ \ sqrt {s} = 13〜 \ mbox {tev} $在2015年和2016年Cern大型强子碰撞器上收集的Atlas detector，对应于$ \ mbox {36.1 fb}^$ 1} $。单个顶级夸克和顶级夸克对的速度是由多个独立事件发生器很好地建模的。在领先的三个射流排放的横向动量中观察到了显着的不种作，而领先的顶级横向动量和顶级夸克对横向动量都与几个理论预测不相容。
Differential cross-sections are measured for top-quark pair production in the all-hadronic decay mode, using proton$-$proton collision events collected by the ATLAS experiment in which all six decay jets are separately resolved. Absolute and normalised single- and double-differential cross-sections are measured at particle and parton level as a function of various kinematic variables. Emphasis is placed on well-measured observables in fully reconstructed final states, as well as on the study of correlations between the top-quark pair system and additional jet radiation identified in the event. The study is performed using data from proton$-$proton collisions at $\sqrt{s}=13~\mbox{TeV}$ collected by the ATLAS detector at CERN's Large Hadron Collider in 2015 and 2016, corresponding to an integrated luminosity of $\mbox{36.1 fb}^{-1}$. The rapidities of the individual top quarks and of the top-quark pair are well modelled by several independent event generators. Significant mismodelling is observed in the transverse momenta of the leading three jet emissions, while the leading top-quark transverse momentum and top-quark pair transverse momentum are both found to be incompatible with several theoretical predictions.
