Measurement of the top quark mass in the t ¯t →lepton+jets channel from √ s = 8 TeV ATLAS data and combination with previous results Aaboud, M. Aguilar Saavedra, Juan Antonio Atlas Collaboration The top quark mass is measured using a template method in the t ¯t → 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 t ¯t → 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 combinationwith previousATLASmtop measurements gives mtop = 172.69 ± 0.25 (stat) ± 0.41 (syst) GeV. 2020-03-05T08:22:22Z 2020-03-05T08:22:22Z 2019-03-29 info:eu-repo/semantics/article Álvarez Piqueras, D., Aparisi, P., Bailey, A. J., Barranco, L., Cabrera, S., Castillo, F. L., ... & Estrada, O. (2019). Measurement of the top quark mass in the tt¯→ lepton+ jets channel from s√= 8 TeV ATLAS data and combination with previous results. Eur. Phys. J. C (2019) 79:290 http://hdl.handle.net/10481/60014 10.1140/epjc/s10052-019-6757-9 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Springer Nature