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Top-quark mass measurement in the all-hadronic t(t)over-bar decay channel at root s=8 TeV with the ATLAS detector
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.ORCID iD: 0000-0002-1253-8583
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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Number of Authors: 28542017 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, article id 118Article in journal (Refereed) Published
Abstract [en]

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" role="presentation">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.

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2017. article id 118
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Subatomic Physics
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URN: urn:nbn:se:uu:diva-341798DOI: 10.1007/JHEP09(2017)118ISI: 000412016600001OAI: oai:DiVA.org:uu-341798DiVA, id: diva2:1182914
Note

ATLAS Collaboration. For a complete list of authors see http://dx.doi.org/10.1007/JHEP09(2017)118

Available from: 2018-02-15 Created: 2018-02-15 Last updated: 2018-02-15Bibliographically approved

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Bergeås Kuutmann, ElinBrenner, RichardEkelöf, TordEllert, MattiasFerrari, ArnaudGradin, P.O. JoakimÖhman, HenrikMadsen, AlexanderRangel-Smith, Camilla
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