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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.

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Title: 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.
Authors: ATLAS Collaboration (AUTHOR), Aad, G.1 (AUTHOR), Aakvaag, E.2 (AUTHOR), Abbott, B.3 (AUTHOR), Abdelhameed, S.4 (AUTHOR), Abeling, K.5 (AUTHOR), Abicht, N. J.6 (AUTHOR), Abidi, S. H.7 (AUTHOR), Aboelela, M.8 (AUTHOR), Aboulhorma, A.9 (AUTHOR), Abramowicz, H.10 (AUTHOR), Abulaiti, Y.11 (AUTHOR), Acharya, B. S.12,13,14 (AUTHOR), Ackermann, A.15 (AUTHOR), Adam Bourdarios, C.16 (AUTHOR), Adamczyk, L.17 (AUTHOR), Addepalli, S. V.18 (AUTHOR), Addison, M. J.19 (AUTHOR), Adelman, J.20 (AUTHOR), Adiguzel, A.21 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Jul2025, Vol. 85 Issue 7, p1-46. 46p.
Subjects: Quantum chromodynamics, Proton-proton interactions, Spatial resolution, Hadron interactions, Monte Carlo method, Particle detectors
Abstract: 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 fb - 1 of proton–proton collision data from the Large Hadron Collider at a centre-of-mass energy of 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 (| η | < 1.2) typically vary from 1% to about 5% as a function of | η | at very low transverse momentum, p T , of around 20 GeV for both R = 0.2 and 0.6 jets. The relative energy resolution ranges from (35 ± 6) % at p T = 20 GeV to (6 ± 0.5) % at p 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. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: 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&#160;TeV with the ATLAS detector.
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  Data: 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 fb - 1 of proton–proton collision data from the Large Hadron Collider at a centre-of-mass energy of 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 (| η | &lt; 1.2) typically vary from 1% to about 5% as a function of | η | at very low transverse momentum, p T , of around 20 GeV for both R = 0.2 and 0.6 jets. The relative energy resolution ranges from (35 &#177; 6) % at p T = 20 GeV to (6 &#177; 0.5) % at p 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. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Physical Journal C -- Particles &amp; Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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