Light-Quark and Gluon Jet Discrimination in pp Collisions at √s̅ = 7 TeV with the ATLAS Detector

Simple item page
dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)en_US
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorAbdel Khalek, S.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAben, R.en_US
dc.contributor.authorAbi, B.en_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorNamasivayam, Harisankaren_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorLeyton, Michaelen_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorLeyton, Michaelen_US
dc.contributor.utdAuthorNamasivayam, Harisankaren_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2014-11-14T22:40:20Z
dc.date.available2014-11-14T22:40:20Z
dc.date.created2014-08-21en_US
dc.date.issued2014-08-21en_US
dc.description.abstractA likelihood-based discriminant for the identification of quark- and gluon-initiated jets is built and validated using 4.7 fb⁻¹ of proton-proton collision data at √s̅ = 7 TeV collected with the ATLAS detector at the LHC. Data samples with enriched quark or gluon content are used in the construction and validation of templates of jet properties that are the input to the likelihood-based discriminant. The discriminating power of the jet tagger is established in both data and Monte Carlo samples within a systematic uncertainty of ≈10-20%. In data, light-quark jets can be tagged with an efficiency of ≈ 50% while achieving a gluon-jet mis-tag rate of ≈ 25% in a p_T range between 40 GeV and 360 GeV for jets in the acceptance of the tracker. The rejection of gluon-jets found in the data is significantly below what is attainable using a Pythia 6 Monte Carlo simulation, where gluon-jet mis-tag rates of 10% can be reached for a 50% selection efficiency of light-quark jets using the same jet properties.en_US
dc.identifier.bibliographicCitationAad, G., Abbott, B., Abdallah, J. et al., 2014. “Light-quark and gluon jet discrimination in pp collisions at √s̅ = 7 TeV with the ATLAS detector.” European Physical Journal C 74(3023), doi:10.1140/epjc/s10052-014-3023-zen_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue3023en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4193
dc.identifier.volume74en_US
dc.language.isoen_USen_US
dc.publisherSpringeren_US
dc.relation.urihttp://dx.doi.org/10.1140/epjc/s10052-014-3023-z
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2014 CERN for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceEuropean Physical Journal C
dc.subjectJets (Nuclear physics)en_US
dc.subjectQuarksen_US
dc.subjectGluonsen_US
dc.subjectMonte Carlo method--Computer simulationen_US
dc.subjectProton-proton interactionsen_US
dc.titleLight-Quark and Gluon Jet Discrimination in pp Collisions at √s̅ = 7 TeV with the ATLAS Detectoren_US
dc.typeTexten_US
dc.type.genreArticleen_US

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
NSM-FR-JMIzen-271294.71.pdf
Size:
967.55 KB
Format:
Adobe Portable Document Format
Description:
Article
Download

Collections

Izen, Joseph M.
Lou, Xinchou
NSM Staff-Student Research