Top-quark mass measurement in the all-hadronic tt¯ decay channel at √s=8 TeV with the ATLAS detector. / The ATLAS Collaboration.

In: Journal of High Energy Physics, Vol. 2017, 118, 09.2017, p. 1-41.

Research output: Contribution to journalArticle

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  • The ATLAS Collaboration

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.
Original languageEnglish
Article number118
Pages (from-to)1-41
Number of pages41
JournalJournal of High Energy Physics
Volume2017
Early online date25 Sep 2017
DOIs
Publication statusPublished - Sep 2017
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

ID: 28878377