Measurement of the top quark mass in the tt¯→ lepton+jets channel from s√=8 TeV ATLAS data and combination with previous results
Date
2019
Authors
Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Journal Title
Journal ISSN
Volume Title
Publisher
The European Physical Journal C
Abstract
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.
Description
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Citation
Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D.K., … Zwalinski, L (2019). Measurement of the top quark mass in the tt¯→ lepton+jets channel from s√=8 TeV ATLAS data and combination with previous results. The European Physical Journal C, 79(4). https://doi.org/10.1140/epjc/s10052-019-6757-9