标题： 四顶夸克产生搜索和在大型强子对撞机上的截面测量 显示英文标题

标题： Four top quark production searches and cross section measurements at the LHC

摘要： 四顶夸克产生是一种罕见的标准模型过程，首次在CERN的LHC上质子-质子碰撞中被ATLAS和CMS合作组观测到，能量为\sqrts 。 这两种观测结果均在同一电荷轻子对和多轻子最终态中进行，并在本文中呈现。 此外，还介绍了CMS合作组使用全部强子、一个轻子和相反电荷轻子对最终态对四顶夸克产生的另一种测量。 这是第一个直接研究全部强子最终态的结果。 显示英文摘要

摘要： Four top quark production is a rare standard model process that has been observed for the first time in proton-proton collisions at \sqrts at the CERN LHC by both the ATLAS and CMS Collaborations. Both observations were made in the same-sign dilepton and multilepton final states of the process and are presented in this contribution. In addition, another measurement of four top production by the CMS Collaboration using the all hadronic, one lepton and opposite-sign dilepton final states is presented. This is the first result to take a direct look at the all hadronic final state.