论文标题
Atlas和CMS单个微分方Quark对的影响在$ \ sqrt {s} = 8 $ TEV对CTEQ-TEA PDFS的影响
The impact of ATLAS and CMS single differential top-quark pair measurements at $\sqrt{s}=8$ TeV to CTEQ-TEA PDFs
论文作者
论文摘要
通过应用错误PDF更新方法，我们分析了从Atlas和CMS实验的Top-Quark配对生产数据的绝对化和标准化的单个差分横截面的影响，该数据是在$ \ sqrt {s} = 8 $ tev的大型强生对撞机上，在CT14HERA2 pdfff pdff pdff the contron和CMS实验的影响。我们发现，当拟合中包含名义CT14HERA2包含喷气生产数据时，顶级的夸克对单个微分分布在CT14Hera2 Gluon PDF上提供了较小的约束。当删除JET数据（CT14HERA2MJ）和/或将增加的权重增加到CT14HERA2拟合中的顶部数据时，就会存在较大的GLUON分布的约束。加权的$ t \ bar t $数据对CT14HERA2MJ GLUON PDF的CT14HERA2MJ GLUON PDF提供了重大限制，这些限制与从包容性喷气生产数据获得的ct14Hera2MJ Gluon PDF相当。此外，我们研究了顶级对单差分分布的顶级夸克质量灵敏度。
By applying the Error PDF Updating Method, we analyze the impact of the absolute and normalized single differential cross-sections for top-quark pair production data from the ATLAS and CMS experiments at the Large Hadron Collider, at a centre-of-mass energy of $\sqrt{s}= 8$ TeV, on the CT14HERA2 PDFs. We find that the top quark pair single differential distributions provide minor constraints on the CT14HERA2 gluon PDF when the nominal CT14HERA2 inclusive jet production data are included in the fit. Larger constraints on the gluon distribution are present when the jet data are removed (CT14HERA2mJ) and/or when increased weights are given to the top data in the CT14HERA2 fits. The weighted $t\bar t$ data provide significant constraints on the CT14HERA2mJ gluon PDF, that are comparable to those obtained from inclusive jet production data. Furthermore, we examine the top quark mass sensitivity of the top-quark pair single differential distributions.
