Measurement of the top quark mass with lepton+jets final states using p p collisions at √s=13TeV
European Physical Journal C, vol.78, no.11, 2018 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 78 Issue: 11
- Publication Date: 2018
- Doi Number: 10.1140/epjc/s10052-018-6332-9
- Journal Name: European Physical Journal C
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Istanbul University Affiliated: No
Abstract
© 2018, CERN for the benefit of the CMS collaboration.The mass of the top quark is measured using a sample of t t ¯ events collected by the CMS detector using proton-proton collisions at s=13TeV at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9fb-1. For each event the mass is reconstructed from a kinematic fit of the decay products to a t t ¯ hypothesis. Using the ideogram method, the top quark mass is determined simultaneously with an overall jet energy scale factor (JSF), constrained by the mass of the W boson in q q ¯ ′ decays. The measurement is calibrated on samples simulated at next-to-leading order matched to a leading-order parton shower. The top quark mass is found to be 172.25±0.08(stat+JSF)±0.62(syst)GeV. The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of t t ¯ production, and no indications of a bias in the measurements are observed.