Top-quark mass measurement in the all-hadronic <i>t</i>(<i>t</i>)over-bar decay channel at √s=8 TeV with the ATLAS detector



Aaboud, MD, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2840 more authors) (2017) Top-quark mass measurement in the all-hadronic <i>t</i>(<i>t</i>)over-bar decay channel at √s=8 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 09 (9). 118-.

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Abstract

The top-quark mass is measured in the all-hadronic top-antitop quark decay channel using proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV with the ATLAS detector at the CERN Large Hadron Collider. The data set used in the analysis corresponds to an integrated luminosity of 20.2 fb$^{-1}$. The large multi-jet background is modelled using a data-driven method. The top-quark mass is obtained from template fits to the ratio of the three-jet to the dijet mass. The three-jet mass is obtained from the three jets assigned to the top quark decay. From these three jets the dijet mass is obtained using the two jets assigned to the W boson decay. The top-quark mass is measured to be 173.72 $\pm$ 0.55 (stat.) $\pm$ 1.01 (syst.) GeV.

Item Type: Article
Additional Information: 39 pages in total, author list starting page 23, 6 figures, 4 tables, submitted to JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-03/
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Top physics
Depositing User: Symplectic Admin
Date Deposited: 26 Apr 2017 10:03
Last Modified: 18 Oct 2023 07:30
DOI: 10.1007/JHEP09(2017)118
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006668