Top-quark mass measurement in the all-hadronic tt¯ decay channel at √s=13 TeV with the ATLAS detector

Date

2017

Authors

Aaboud, M.
Albert, Justin
David, Claire
Elliot, Alison A.
Fincke-Keeler, J.
Hamano, Kenji
Hill, Ewan Chin
Keeler, Richard
Kowalewski, Robert
Kuwertz, E. S.

Journal Title

Journal ISSN

Volume Title

Publisher

Journal of High Energy Physics

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.

Description

Keywords

Hadron-Hadron scattering (experiments), Top physics

Citation

Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; … & Zwalinski, L. (2017). Top-quark mass measurement in the all-hadronic tt¯ decay channel at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2017(9), article 118. DOI: 10.1007/JHEP09(2017)118