Systematics of quark/gluon tagging

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dc.contributor.author Gras, P.
dc.contributor.author Höche, S.
dc.contributor.author Kar, D.
dc.contributor.author Larkoski, A.
dc.contributor.author Lönnblad, L.
dc.contributor.author Plätzer, S.
dc.contributor.author Siódmok, A.
dc.contributor.author Skands, P.
dc.contributor.author Soyez, G.
dc.contributor.author Thaler, J.
dc.date.accessioned 2017-11-08T08:43:49Z
dc.date.available 2017-11-08T08:43:49Z
dc.date.issued 2017-07
dc.identifier.citation Gras, P. et al. 2017. Systematics of quark/gluon tagging. JOURNAL OF HIGH ENERGY PHYSICS 2017(7), Article number 91. en_ZA
dc.identifier.issn 1126-6708 (Print)
dc.identifier.issn 1029-8479 (Online)
dc.identifier.uri http://hdl.handle.net/10539/23387
dc.description.abstract By 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.language.iso en en_ZA
dc.publisher Springer Verlag en_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.subject Jets en_ZA
dc.subject QCD Phenomenology en_ZA
dc.subject EVENT SHAPE DISTRIBUTIONS en_ZA
dc.subject QCD ANALYTIC PREDICTIONS en_ZA
dc.subject GLUON JET PROPERTIES en_ZA
dc.subject QUARK JETS en_ZA
dc.subject HERWIG PLUS en_ZA
dc.subject POWER CORRECTIONS en_ZA
dc.subject 3-JET EVENTS en_ZA
dc.subject PARTON en_ZA
dc.subject DIPOLE en_ZA
dc.subject TESTS en_ZA
dc.title Systematics of quark/gluon tagging en_ZA
dc.type Article en_ZA
dc.journal.title JOURNAL OF HIGH ENERGY PHYSICS en_ZA
dc.description.librarian EM2017 en_ZA
dc.citation.doi 10.1007/JHEP07(2017)091 en_ZA
dc.citation.issue 7 en_ZA


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