Cover Image

Energy scale and resolution for anti-kt jets with radius parameters R = 0.2 and 0.6 measured in proton-proton collisions at √s=13 TeV with the ATLAS detector

Show other versions (444)

Jets with different radius parameters R are an important tool for probing quantum chromodynamics processes at different angular scales. Jets with small $$R=0.2$$are instrumental in measurements of the substructure of large-R jets resulting from collimated hadronic decays of energetic W, Z, and Hig...

Full description

Saved in:
Bibliographic Details
Main Authors: Aad, Georges (Author) , Ackermann, Anke (Author) , Backes, Mathias (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Mkrtchyan, Tigran (Author) , Rassloff, Damir Fabrice (Author) , Sanfilippo, Lorenzo (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sothilingam, Varsiha (Author) , Stamen, Rainer (Author) , Vigani, Luigi (Author) , Wessels, Martin (Author) , Zinßer, Joachim (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 22 July 2025
In: The European physical journal. C, Particles and fields
Year: 2025, Volume: 85, Issue: 7, Pages: 1-46
ISSN:1434-6052
DOI:10.1140/epjc/s10052-025-14226-6
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-025-14226-6
Get full text
Author Notes:ATLAS Collaboration*
Description
Summary:Jets with different radius parameters R are an important tool for probing quantum chromodynamics processes at different angular scales. Jets with small $$R=0.2$$are instrumental in measurements of the substructure of large-R jets resulting from collimated hadronic decays of energetic W, Z, and Higgs bosons, top quarks, and of potential new resonances. This paper presents measurements of the energy scale, resolution, and associated uncertainties of jets with radius parameters $$R=0.2$$and 0.6, obtained using the ATLAS detector. The results are based on $$37~\text {fb}^{-1}$$of proton-proton collision data from the Large Hadron Collider at a centre-of-mass energy of $$\sqrt{s}=13$$ TeV. A new in situ method for measuring jet energy scale differences between data and Monte Carlo simulations is presented. The systematic uncertainties in the jet energy scale for central jets $$(|\eta | < 1.2)$$typically vary from 1% to about 5% as a function of $$|\eta |$$at very low transverse momentum, $$p_{\text {T}},$$of around 20 GeV for both $$R=0.2$$and 0.6 jets. The relative energy resolution ranges from $$(35 \pm 6)\%$$at $$p_{\text {T}} = 20$$ GeV to $$(6 \pm 0.5)\%$$at $$p_{\text {T}} = 300$$ GeV for central $$R=0.2$$jets, and is found to be slightly worse for $$R=0.6$$jets. Finally, the effect of close-by hadronic activity on the jet energy scale is investigated and is found to be well modelled by the ATLAS Monte Carlo simulations.
Item Description:Veröffentlicht: 22. Juli 2025
Im Titel steht der Buchstabe unter dem Wurzelsymbol
Im Titel ist der Buchstabe "t" tiefgestellt
*ATLAS Collaboration: G. Aad, A. Ackermann, M.J. Backes, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, D.F. Rassloff, L. Sanfilippo, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, L. Vigani, M. Wessels, J. Zinsser [und sehr viele weitere Personen]
Gesehen am 22.04.2026
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-025-14226-6

Similar Items