Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV

© 2019 CERN. for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and...

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Format: Article
Language:English
Published: American Physical Society (APS) 2021
Online Access:https://hdl.handle.net/1721.1/134352
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collection MIT
description © 2019 CERN. for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. The production of charged hadrons within jets recoiling against a Z boson is measured in proton-proton collision data at s=8 TeV recorded by the LHCb experiment. The charged-hadron structure of the jet is studied longitudinally and transverse to the jet axis for jets with transverse momentum pT>20 GeV and in the pseudorapidity range 2.5<η<4. These are the first measurements of jet hadronization at these forward rapidities and also the first where the jet is produced in association with a Z boson. In contrast to previous hadronization measurements at the Large Hadron Collider, which are dominated by gluon jets, these measurements probe predominantly light-quark jets which are found to be more longitudinally and transversely collimated with respect to the jet axis when compared to the previous gluon dominated measurements. Therefore, these results provide valuable information on differences between quarks and gluons regarding nonperturbative hadronization dynamics.
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spelling mit-1721.1/1343522022-04-01T17:20:48Z Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV © 2019 CERN. for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. The production of charged hadrons within jets recoiling against a Z boson is measured in proton-proton collision data at s=8 TeV recorded by the LHCb experiment. The charged-hadron structure of the jet is studied longitudinally and transverse to the jet axis for jets with transverse momentum pT>20 GeV and in the pseudorapidity range 2.5<η<4. These are the first measurements of jet hadronization at these forward rapidities and also the first where the jet is produced in association with a Z boson. In contrast to previous hadronization measurements at the Large Hadron Collider, which are dominated by gluon jets, these measurements probe predominantly light-quark jets which are found to be more longitudinally and transversely collimated with respect to the jet axis when compared to the previous gluon dominated measurements. Therefore, these results provide valuable information on differences between quarks and gluons regarding nonperturbative hadronization dynamics. 2021-10-27T20:04:34Z 2021-10-27T20:04:34Z 2019 2021-04-08T18:52:24Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134352 en 10.1103/PHYSREVLETT.123.232001 Physical Review Letters Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf American Physical Society (APS) APS
spellingShingle Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV
title Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV
title_full Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV
title_fullStr Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV
title_full_unstemmed Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV
title_short Measurement of Charged Hadron Production in Z -Tagged Jets in Proton-Proton Collisions at √ s = 8 TeV
title_sort measurement of charged hadron production in z tagged jets in proton proton collisions at √ s 8 tev
url https://hdl.handle.net/1721.1/134352