Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV

Previous studies have shown that weighted angular moments derived from jet constituents encode the colour connections between partons that seed the jets. This paper presents measurements of two such distributions, the jet-pull angle and jet-pull magnitude, both of which are derived from the jet-pull...

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Autor principal: Aaboud, M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14346044_v78_n10_p_Aaboud
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_14346044_v78_n10_p_Aaboud2023-10-03T16:15:31Z Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV Aaboud, M. Previous studies have shown that weighted angular moments derived from jet constituents encode the colour connections between partons that seed the jets. This paper presents measurements of two such distributions, the jet-pull angle and jet-pull magnitude, both of which are derived from the jet-pull angular moment. The measurement is performed in tt¯ events with one leptonically decaying W boson and one hadronically decaying W boson, using 36.1fb-1 of pp collision data recorded by the ATLAS detector at s=13TeV delivered by the Large Hadron Collider. The observables are measured for two dijet systems, corresponding to the colour-connected daughters of the W boson and the two b-jets from the top-quark decays, which are not expected to be colour connected. To allow the comparison of the measured distributions to colour model predictions, the measured distributions are unfolded to particle level, after correcting for experimental effects introduced by the detector. While good agreement can be found for some combinations of predictions and observables, none of the predictions describes the data well across all observables. © 2018, CERN for the benefit of the ATLAS collaboration. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346044_v78_n10_p_Aaboud
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Previous studies have shown that weighted angular moments derived from jet constituents encode the colour connections between partons that seed the jets. This paper presents measurements of two such distributions, the jet-pull angle and jet-pull magnitude, both of which are derived from the jet-pull angular moment. The measurement is performed in tt¯ events with one leptonically decaying W boson and one hadronically decaying W boson, using 36.1fb-1 of pp collision data recorded by the ATLAS detector at s=13TeV delivered by the Large Hadron Collider. The observables are measured for two dijet systems, corresponding to the colour-connected daughters of the W boson and the two b-jets from the top-quark decays, which are not expected to be colour connected. To allow the comparison of the measured distributions to colour model predictions, the measured distributions are unfolded to particle level, after correcting for experimental effects introduced by the detector. While good agreement can be found for some combinations of predictions and observables, none of the predictions describes the data well across all observables. © 2018, CERN for the benefit of the ATLAS collaboration.
format JOUR
author Aaboud, M.
spellingShingle Aaboud, M.
Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV
author_facet Aaboud, M.
author_sort Aaboud, M.
title Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV
title_short Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV
title_full Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV
title_fullStr Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV
title_full_unstemmed Measurement of colour flow using jet-pull observables in tt¯ events with the ATLAS experiment at √s=13TeV
title_sort measurement of colour flow using jet-pull observables in tt¯ events with the atlas experiment at √s=13tev
url http://hdl.handle.net/20.500.12110/paper_14346044_v78_n10_p_Aaboud
work_keys_str_mv AT aaboudm measurementofcolourflowusingjetpullobservablesintteventswiththeatlasexperimentats13tev
_version_ 1807317928817721344

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