Measurement of hadronic event shapes in high-<i>p</i><sub>T</sub> multijet final states at √<i>s</i>=13 TeV with 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) Measurement of hadronic event shapes in high-<i>p</i><sub>T</sub> multijet final states at √<i>s</i>=13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 01 (1). 188-.

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Abstract

A measurement of event-shape variables in proton-proton collisions at large momentum transfer is presented using data collected at $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. Six event-shape variables calculated using hadronic jets are studied in inclusive multijet events using data corresponding to an integrated luminosity of 139 fb$^{-1}$. Measurements are performed in bins of jet multiplicity and in different ranges of the scalar sum of the transverse momenta of the two leading jets, reaching scales beyond 2 TeV. These measurements are compared with predictions from Monte Carlo event generators containing leading-order or next-to-leading order matrix elements matched to parton showers simulated to leading-logarithm accuracy. At low jet multiplicities, shape discrepancies between the measurements and the Monte Carlo predictions are observed. At high jet multiplicities, the shapes are better described but discrepancies in the normalisation are observed.

Item Type: Article
Additional Information: 46 pages total, author list starting page 30, 10 figures, 1 table, published in JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2019-02/ This version includes modifications described in the erratum that can be found at https://doi.org/10.1007/JHEP12(2021)053
Uncontrolled Keywords: Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 24 Feb 2021 17:21
Last Modified: 16 Oct 2023 18:01
DOI: 10.1007/JHEP01(2021)188
Open Access URL: https://link.springer.com/article/10.1007%2FJHEP01...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3115934