Measurement of the top quark mass in the tt¯→ lepton+jets channel from √s=8 TeV ATLAS data and combination with previous results

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  • Université Mohamed Premier and LPTPM


The top quark mass is measured using a template method in the tt¯→ lepton+jets channel (lepton is e or μ) using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of √s=8 TeV and correspond to an integrated luminosity of 20.2 fb−1. The tt¯→ lepton+jets channel is characterized by the presence of a charged lepton, a neutrino and four jets, two of which originate from bottom quarks (b). Exploiting a three-dimensional template technique, the top quark mass is determined together with a global jet energy scale factor and a relative b-to-light-jet energy scale factor. The mass of the top quark is measured to be mtop=172.08±0.39(stat)±0.82(syst) GeV. A combination with previous ATLAS mtop measurements gives mtop=172.69±0.25(stat)±0.41(syst) GeV.

Bibliographic note

75 pages in total, author list starting page 59, 14 figures, 12 tables, submitted to EPJC. All figures including auxiliary figures are available at this


Original languageEnglish
Article number290
Number of pages51
JournalJournal of High Energy Physics
Issue number4
Early online date29 Mar 2019
Publication statusPublished - 1 Apr 2019


  • hep-ex