Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pp collisions at √s=13 TeV using the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2917 more authors) (2021) Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pp collisions at √s=13 TeV using the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 01 (1). 033-.

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Abstract

Differential cross-sections are measured for top-quark pair production in the all-hadronic decay mode, using proton$-$proton collision events collected by the ATLAS experiment in which all six decay jets are separately resolved. Absolute and normalised single- and double-differential cross-sections are measured at particle and parton level as a function of various kinematic variables. Emphasis is placed on well-measured observables in fully reconstructed final states, as well as on the study of correlations between the top-quark pair system and additional jet radiation identified in the event. The study is performed using data from proton$-$proton collisions at $\sqrt{s}=13~\mbox{TeV}$ collected by the ATLAS detector at CERN's Large Hadron Collider in 2015 and 2016, corresponding to an integrated luminosity of $\mbox{36.1 fb}^{-1}$. The rapidities of the individual top quarks and of the top-quark pair are well modelled by several independent event generators. Significant mismodelling is observed in the transverse momenta of the leading three jet emissions, while the leading top-quark transverse momentum and top-quark pair transverse momentum are both found to be incompatible with several theoretical predictions.

Item Type: Article
Additional Information: 79 pages in total, author list starting page 63, 24 figures, 18 tables, submitted to the Journal of High Energy Physics. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2018-18
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Top physics
Depositing User: Symplectic Admin
Date Deposited: 24 Feb 2021 17:16
Last Modified: 05 Oct 2023 09:26
DOI: 10.1007/JHEP01(2021)033
Open Access URL: https://link.springer.com/article/10.1007%2FJHEP01...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3115935