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.
Aaboud M., A.G. (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, PARTICLES AND FIELDS, 79(4), 1-51 [10.1140/epjc/s10052-019-6757-9].
Measurement of the top quark mass in the tt¯ → lepton+jets channel from √s = 8 TeV ATLAS data and combination with previous results
Alberghi G. L.;Bellagamba L.;Bindi M.;Boscherini D.;Cabras G.;Caforio D.;De Castro S.;Fabbri F.;Fabbri L.;Franchini M.;Gabrielli A.;Giacobbe B.;Macchiolo A.;Massa L.;Mengarelli A.;Monzani S.;Polini A.;Rinaldi L.;Romano M.;Sbarra C.;Sbrizzi A.;Semprini-Cesari N.;Sioli M.;Todome K.;Ucchielli G.;Valentinetti S.;Villa M.;Vittori C.;Vivarelli I.;Zoccoli A.;
2019
Abstract
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.File | Dimensione | Formato | |
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