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

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbicht, N.J.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAdam Bourdarios, C.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAddepalli, S.V.
dc.contributor.authorAddison, M.J.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdiguzel, A.
dc.contributor.authorAdye, T.
dc.contributor.authorAffolder, A.A.
dc.contributor.authorAfik, Y.
dc.contributor.authorAgaras, M.N.
dc.contributor.authoret al.
dc.date.issued2024
dc.descriptionPublished online 8 September 2023
dc.description.abstractThe 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.
dc.description.statementofresponsibilityG. Aad ... et al. (The ATLAS Collaboration)
dc.identifier.citationChinese Physics C, 2024; 48(2):023001-0-023001-25
dc.identifier.doi10.1088/1674-1137/acf701
dc.identifier.issn1674-1137
dc.identifier.issn2058-6132
dc.identifier.orcidFilmer, E.K. [0000-0001-6967-7325]
dc.identifier.orcidJackson, P. [0000-0002-0847-402X]
dc.identifier.orcidMcDougall, A.E. [0000-0001-7713-2800]
dc.identifier.orcidPotti, H. [0000-0002-0800-9902]
dc.identifier.orcidTing, E.X.L. [0000-0002-5886-6339]
dc.identifier.orcidWhite, M.J. [0000-0001-5474-4580]
dc.identifier.urihttps://hdl.handle.net/2440/140810
dc.language.isoen
dc.publisherIOP Publishing
dc.relation.granthttp://purl.org/au-research/grants/arc/CE200100008
dc.rightsContent from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
dc.source.urihttp://dx.doi.org/10.1088/1674-1137/acf701
dc.subjectATLAS; JET; QUARK; GLUON; TAGGING
dc.titlePerformance and calibration of quark/gluon-jet taggers using 140 fb⁻¹ of pp collisions at √s = 13 TeV with the ATLAS detector*
dc.title.alternativePerformance and calibration of quark/gluon-jet taggers using 140 fb-1 of pp collisions at root s = 13 TeV with the ATLAS detector*
dc.typeJournal article
pubs.publication-statusPublished

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