Measurement of hadronic event shapes in high-p T multijet final states at √s = 13 TeV with the ATLAS detector:Journal of High Energy Physics

Collaboration, ATLAS and Barton, A.E. and Bertram, I.A. and Borissov, G. and Bouhova-Thacker, E.V. and Fox, H. and Henderson, R.C.W. and Jones, R.W.L. and Kartvelishvili, V. and Long, R.E. and Love, P.A. and Muenstermann, D. and Parker, A.J. and Sanderswood, Izaac and Smizanska, M. and Tee, A.S. and Walder, J. and Wharton, A.M. and Whitmore, B.W. and Yexley, Melissa (2021) Measurement of hadronic event shapes in high-p T multijet final states at √s = 13 TeV with the ATLAS detector:Journal of High Energy Physics. J. High Energy Phys., 2021 (1). ISSN 1029-8479

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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 √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:
Journal Article
Journal or Publication Title:
J. High Energy Phys.
Subjects:
ID Code:
151984
Deposited By:
Deposited On:
22 Feb 2021 08:45
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Aug 2021 06:15