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dc.contributor.authorGallicchio, Jason
dc.contributor.authorSchwartz, Matthew D
dc.date.accessioned2012-02-14T16:13:25Z
dc.date.issued2011
dc.identifier.citationGallicchio, Jason and Matthew Schwartz. 2011. Quark and gluon tagging at the LHC. Physical Review Letters 107(17): 172001.en_US
dc.identifier.issn1079-7114en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:8160981
dc.description.abstractBeing able to distinguish light-quark jets from gluon jets on an event-by-event basis could significantly enhance the reach for many new physics searches at the Large Hadron Collider. Through an exhaustive search of existing and novel jet substructure observables, we find that a multivariate approach can filter out over 95% of the gluon jets while keeping more than half of the light-quark jets. Moreover, a combination of two simple variables, the charge track multiplicity and the \(p_T\)-weighted linear radial moment (girth), can achieve similar results. Our study is only Monte Carlo based, so other observables constructed using different jet sizes and parameters are used to highlight areas that deserve further theoretical and experimental scrutiny. Additional information, including distributions of around 10 000 variables, can be found at http://jets.physics.harvard.edu/qvg/.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofdoi:10.1103/PhysRevLett.107.172001en_US
dc.relation.hasversionhttp://arxiv.org/abs/1106.3076v2en_US
dash.licenseOAP
dc.subjecthigh energy physicsen_US
dc.subjectphenomenologyen_US
dc.titleQuark and Gluon Tagging at the LHCen_US
dc.typeJournal Articleen_US
dc.description.versionAuthor's Originalen_US
dc.relation.journalPhysical Review Lettersen_US
dash.depositing.authorSchwartz, Matthew D
dc.date.available2012-02-14T16:13:25Z
dc.identifier.doi10.1103/PhysRevLett.107.172001*
dash.contributor.affiliatedSchwartz, Matthew


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