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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00378455" target="_blank" >RIV/68407700:21220/24:00378455 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21240/24:00378455 RIV/68407700:21340/24:00378455 RIV/68407700:21670/24:00378455
Result on the web
<a href="https://doi.org/10.1088/1674-1137/acf701" target="_blank" >https://doi.org/10.1088/1674-1137/acf701</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1674-1137/acf701" target="_blank" >10.1088/1674-1137/acf701</a>

Result language
angličtina
Original language name
Performance and calibration of quark/gluon-jet taggers using 140 fb-1 of pp collisions at root s=13 TeV with the ATLAS detector
Original language description
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 TeV proton–proton collision data with an integrated luminosity of 140 fb 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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Fundamental constituents of matter through frontier technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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