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|Title:||Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV|
|Other Titles:||Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s = 7 TeV|
Abdel Khalek, S.
|Citation:||European Physical Journal C: Particles and Fields, 2015; 75(4):1-26|
|G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)|
|Abstract:||The mass of the top quark is measured in a data set corresponding to 4.6 [Formula: see text] of proton-proton collisions with centre-of-mass energy [Formula: see text] TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top-antitop quark pairs with at least six jets in the final state are selected. The substantial background from multijet production is modelled with data-driven methods that utilise the number of identified [Formula: see text]-quark jets and the transverse momentum of the sixth leading jet, which have minimal correlation. The top-quark mass is obtained from template fits to the ratio of three-jet to dijet mass. The three-jet mass is calculated from the three jets produced in a top-quark decay. Using these three jets the dijet mass is obtained from the two jets produced in the [Formula: see text] boson decay. The top-quark mass obtained from this fit is thus less sensitive to the uncertainty in the energy measurement of the jets. A binned likelihood fit yields a top-quark mass of [Formula: see text].|
|Keywords:||ATLAS; LHC; proton–proton collisions; top quark; top-quark mass; fully hadronic|
|Rights:||© CERN for the benefit of the ATLAS Collaboration 2015. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3.|
|Appears in Collections:||Physics publications|
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