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Performance and calibration of quark/gluon-jet taggers using 140 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector

Aad, G. ; Åkesson, T.P.A. LU orcid ; Doglioni, C. LU ; Ekman, P.A. ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU ; Lytken, E. LU orcid ; Poettgen, R. LU orcid and Simpson, N.D. LU , et al. (2024) In Chinese Physics C 48(2).
Abstract
The identification of jets originating from quarks and gluons, often referred to as quark/gluon tagging, plays an important role in various analyses performed at the Large Hadron Collider, as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced background. This paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration, using √s = 13 TeV proton–proton collision data with an integrated luminosity of 140 fb−1 collected by the ATLAS experiment. Two taggers with high performances in rejecting jets from gluon over jets from quarks are studied: one tagger is based on requirements on the number of inner-detector tracks... (More)
The identification of jets originating from quarks and gluons, often referred to as quark/gluon tagging, plays an important role in various analyses performed at the Large Hadron Collider, as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced background. This paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration, using √s = 13 TeV proton–proton collision data with an integrated luminosity of 140 fb−1 collected by the ATLAS experiment. Two taggers with high performances in rejecting jets from gluon over jets from quarks are studied: one tagger is based on requirements on the number of inner-detector tracks associated with the jet, and the other combines several jet substructure observables using a boosted decision tree. A method is established to determine the quark/gluon fraction in data, by using quark/gluon-enriched subsamples defined by the jet pseudorapidity. Differences in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points. © 2024 Institute of Physics. All rights reserved. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
ATLAS, GLUON, JET, QUARK, TAGGING
in
Chinese Physics C
volume
48
issue
2
article number
023001
publisher
IOP Publishing
external identifiers
  • scopus:85185169176
ISSN
1674-1137
DOI
10.1088/1674-1137/acf701
language
English
LU publication?
yes
id
9a8eb784-9d8c-4b0d-9370-fb387027e4f3
date added to LUP
2025-10-16 15:31:28
date last changed
2025-10-16 15:32:34
@article{9a8eb784-9d8c-4b0d-9370-fb387027e4f3,
  abstract     = {{The identification of jets originating from quarks and gluons, often referred to as quark/gluon tagging, plays an important role in various analyses performed at the Large Hadron Collider, as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced background. This paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration, using √s = 13 TeV proton–proton collision data with an integrated luminosity of 140 fb−1 collected by the ATLAS experiment. Two taggers with high performances in rejecting jets from gluon over jets from quarks are studied: one tagger is based on requirements on the number of inner-detector tracks associated with the jet, and the other combines several jet substructure observables using a boosted decision tree. A method is established to determine the quark/gluon fraction in data, by using quark/gluon-enriched subsamples defined by the jet pseudorapidity. Differences in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points. © 2024 Institute of Physics. All rights reserved.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Smirnova, O. and Zwalinski, L.}},
  issn         = {{1674-1137}},
  keywords     = {{ATLAS; GLUON; JET; QUARK; TAGGING}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{IOP Publishing}},
  series       = {{Chinese Physics C}},
  title        = {{Performance and calibration of quark/gluon-jet taggers using 140 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector}},
  url          = {{http://dx.doi.org/10.1088/1674-1137/acf701}},
  doi          = {{10.1088/1674-1137/acf701}},
  volume       = {{48}},
  year         = {{2024}},
}