Systematics of quark/gluon tagging

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dc.citation.doi10.1007/JHEP07(2017)091en_ZA
dc.citation.issue7en_ZA
dc.contributor.authorGras, P.
dc.contributor.authorHöche, S.
dc.contributor.authorKar, D.
dc.contributor.authorLarkoski, A.
dc.contributor.authorLönnblad, L.
dc.contributor.authorPlätzer, S.
dc.contributor.authorSiódmok, A.
dc.contributor.authorSkands, P.
dc.contributor.authorSoyez, G.
dc.contributor.authorThaler, J.
dc.date.accessioned2017-11-08T08:43:49Z
dc.date.available2017-11-08T08:43:49Z
dc.date.issued2017-07
dc.description.abstractBy measuring the substructure of a jet, one can assign it a “quark” or “gluon” tag. In the eikonal (double-logarithmic) limit, quark/gluon discrimination is determined solely by the color factor of the initiating parton (CF versus CA). In this paper, we confront the challenges faced when going beyond this leading-order understanding, using both parton-shower generators and first-principles calculations to assess the impact of higher-order perturbative and nonperturbative physics. Working in the idealized context of electron-positron collisions, where one can define a proxy for quark and gluon jets based on the Lorentz structure of the production vertex, we find a fascinating interplay between perturbative shower effects and nonperturbative hadronization effects. Turning to proton-proton collisions, we highlight a core set of measurements that would constrain current uncertainties in quark/gluon tagging and improve the overall modeling of jets at the Large Hadron Collider.en_ZA
dc.description.librarianEM2017en_ZA
dc.identifier.citationGras, P. et al. 2017. Systematics of quark/gluon tagging. JOURNAL OF HIGH ENERGY PHYSICS 2017(7), Article number 91.en_ZA
dc.identifier.issn1126-6708 (Print)
dc.identifier.issn1029-8479 (Online)
dc.identifier.urihttp://hdl.handle.net/10539/23387
dc.journal.titleJOURNAL OF HIGH ENERGY PHYSICSen_ZA
dc.language.isoenen_ZA
dc.publisherSpringer Verlagen_ZA
dc.rights© 2017. The Author(s). This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).en_ZA
dc.subjectJetsen_ZA
dc.subjectQCD Phenomenologyen_ZA
dc.subjectEVENT SHAPE DISTRIBUTIONSen_ZA
dc.subjectQCD ANALYTIC PREDICTIONSen_ZA
dc.subjectGLUON JET PROPERTIESen_ZA
dc.subjectQUARK JETSen_ZA
dc.subjectHERWIG PLUSen_ZA
dc.subjectPOWER CORRECTIONSen_ZA
dc.subject3-JET EVENTSen_ZA
dc.subjectPARTONen_ZA
dc.subjectDIPOLEen_ZA
dc.subjectTESTSen_ZA
dc.titleSystematics of quark/gluon taggingen_ZA
dc.typeArticleen_ZA
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