Measurement of the top quark mass in the t(t)over-bar -> lepton plus jets channel from root s=8 TeV ATLAS data and combination with previous results



Aaboud, M yyy, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2932 more authors) (2019) Measurement of the top quark mass in the t(t)over-bar -> lepton plus jets channel from root s=8 TeV ATLAS data and combination with previous results. EUROPEAN PHYSICAL JOURNAL C, 79 (4). 290-.

Access the full-text of this item by clicking on the Open Access link.

Abstract

The top quark mass is measured using a template method in the $t\bar{t}\to$ lepton+jets channel (lepton is $e$ or $\mu$) using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of $\sqrt{s}=8$ TeV and correspond to an integrated luminosity of 20.2 fb$^{-1}$. The $t\bar{t}\to$ 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 $m_{top}= 172.08 \pm 0.39 (stat) \pm 0.82 (syst)$ GeV. A combination with previous ATLAS $m_{top}$ measurements gives $m_{top}= 172.69 \pm 0.25 (stat) \pm 0.41 (syst)$ GeV.

Item Type: Article
Additional Information: 76 pages in total, author list starting page 60, 14 figures, 12 tables, submitted to EPJC. All figures including auxiliary figures are available at this http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2017-03
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 23 Apr 2019 09:16
Last Modified: 19 Jan 2023 00:54
DOI: 10.1140/epjc/s10052-019-6757-9
Open Access URL: https://doi.org/10.1140/epjc/s10052-019-6757-9
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3037671