Measurement of quark- and gluon-like jet fractions using jet charge in PbPb and pp collisions at 5.02 TeV

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dc.citation.articleNumber115
dc.citation.journalTitleJournal of High Energy Physics
dc.citation.volumeNumber2020
dc.contributor.authorThe CMS collaboration
dc.date.accessioned2020-11-04T19:27:21Z
dc.date.available2020-11-04T19:27:21Z
dc.date.issued2020
dc.description.abstractThe momentum-weighted sum of the electric charges of particles inside a jet, known as jet charge, is sensitive to the electric charge of the particle initiating the parton shower. This paper presents jet charge distributions in sNN√ = 5.02 TeV lead-lead (PbPb) and proton-proton (pp) collisions recorded with the CMS detector at the LHC. These data correspond to integrated luminosities of 404 μb−1 and 27.4 pb−1 for PbPb and pp collisions, respectively. Leveraging the sensitivity of the jet charge to fundamental differences in the electric charges of quarks and gluons, the jet charge distributions from simulated events are used as templates to extract the quark- and gluon-like jet fractions from data. The modification of these jet fractions is examined by comparing pp and PbPb data as a function of the overlap of the colliding Pb nuclei (centrality). This measurement tests the color charge dependence of jet energy loss due to interactions with the quark-gluon plasma. No significant modification between different centrality classes and with respect to pp results is observed in the extracted quark- and gluon-like jet fractions.
dc.identifier.citationThe CMS collaboration. "Measurement of quark- and gluon-like jet fractions using jet charge in PbPb and pp collisions at 5.02 TeV." <i>Journal of High Energy Physics,</i> 2020, (2020) Springer Nature: https://doi.org/10.1007/JHEP07(2020)115.
dc.identifier.doihttps://doi.org/10.1007/JHEP07(2020)115
dc.identifier.urihttps://hdl.handle.net/1911/109507
dc.language.isoeng
dc.publisherSpringer Nature
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleMeasurement of quark- and gluon-like jet fractions using jet charge in PbPb and pp collisions at 5.02 TeV
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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