Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s=7 TeV
Web of Science
AuthorAad, G; Abbott, B; Abdallah, J; Khalek, SA; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, OS; Abramowicz, H; ...
Source TitleEuropean Physical Journal C: Particles and Fields
University of Melbourne Author/sBarberio, Luigia; Taylor, Geoffrey; Urquijo, Phillip; Kubota, Takashi; TAN, KONG GUAN; Brennan, Amelia; Jennens, David; Nuti, Francesco; Limosani, Antonio; HANNINGER, GUILHERME; ...
AffiliationSchool of Physics
Document TypeJournal Article
CitationsAad, G., Abbott, B., Abdallah, J., Khalek, S. A., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyka, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T. ,... Zwalinski, L. (2015). Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s=7 TeV. EUROPEAN PHYSICAL JOURNAL C, 75 (4), https://doi.org/10.1140/epjc/s10052-015-3373-1.
Access StatusOpen Access
Open Access at PMChttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4446089
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].
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