Scientific article
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Top-quark mass measurement in the all-hadronic t t ¯ decay channel at √s = 8 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inJournal of High Energy Physics, vol. 1709, p. 118-159
Collection
  • Open Access - SCOAP3
Publication date2017
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 √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 ± 0 . 55 (stat . ) ± 1 . 01 (syst . ) GeV.

Keywords
  • Hadron-Hadron scattering (experiments)
  • Top physics
Citation (ISO format)
ATLAS Collaboration. Top-quark mass measurement in the all-hadronic t t ¯ decay channel at √s = 8 TeV with the ATLAS detector. In: Journal of High Energy Physics, 2017, vol. 1709, p. 118–159. doi: 10.1007/JHEP09(2017)118
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Article (Published version)
Identifiers
Journal ISSN1029-8479
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168downloads

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Creation02/10/2017 09:36:30
First validation02/10/2017 09:36:30
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