论文标题
差异$ \ mathrm {t \ bar {t}} $生产横截面的测量作为喷射质量的函数，并提取了在增强顶部夸克的HADRONIC DECSER中的顶级夸克质量
Measurement of the differential $\mathrm{t\bar{t}}$ production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
论文作者
论文摘要
提出了对洛伦兹增强的顶级夸克的射流质量分布的测量。该测量是在顶级夸克对生产的Lepton+Jets通道中执行的（$ \ mathrm {t \ bar {t}} $，其中Lepton是电子或MUON。 Hadronic Top Quark Decay的产物使用单个大型射流射流重建，横向动量大于400 GEV。在Proton-Proton碰撞中使用LHC的CMS检测器收集数据，对应于138 fb $^{ - 1} $的集成光度。差异$ \ mathrm {t \ bar {t}} $生产横截面作为射流质量的函数被展开到粒子级别，用于提取顶部的夸克质量。使用大拉迪乌斯射流中的Hadronic W Boson衰减对喷射质量尺度进行校准。通过研究射流子结构中的角相关性来减少最终状态辐射建模的不确定性。这些发展导致精度显着提高，顶级夸克质量为173.06美元$ \ pm $ 0.84 GEV。
A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton+jets channel of top quark pair production ($\mathrm{t\bar{t}}$) events, where the lepton is an electron or muon. The products of the hadronic top quark decay are reconstructed using a single large-radius jet with transverse momentum greater than 400 GeV. The data were collected with the CMS detector at the LHC in proton-proton collisions and correspond to an integrated luminosity of 138 fb$^{-1}$. The differential $\mathrm{t\bar{t}}$ production cross section as a function of the jet mass is unfolded to the particle level and is used to extract the top quark mass. The jet mass scale is calibrated using the hadronic W boson decay within the large-radius jet. The uncertainties in the modelling of the final state radiation are reduced by studying angular correlations in the jet substructure. These developments lead to a significant increase in precision, and a top quark mass of 173.06 $\pm$ 0.84 GeV.
