Top-tagging: A Method for Identifying Boosted Hadronic Tops

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dc.creatorKaplan, David E.
dc.creatorRehermann, Keith
dc.creatorSchwartz, Matthew D.
dc.creatorTweedie, Brock
dc.date2008-06-05
dc.date2008-09-11
dc.date.accessioned2026-07-07T11:51:25Z
dc.date.available2026-07-07T11:51:25Z
dc.descriptionA method is introduced for distinguishing top jets (boosted, hadronically decaying top quarks) from light quark and gluon jets using jet substructure. The procedure involves parsing the jet cluster to resolve its subjets, and then imposing kinematic constraints. With this method, light quark or gluon jets with pT ~ 1 TeV can be rejected with an efficiency of around 99% while retaining up to 40% of top jets. This reduces the dijet background to heavy t-tbar resonances by a factor of ~10,000, thereby allowing resonance searches in t-tbar to be extended into the all-hadronic channel. In addition, top-tagging can be used in t-tbar events when one of the tops decays semi-leptonically, in events with missing energy, and in studies of b-tagging efficiency at high pT.
dc.description4 pages, 4 figures; v2: separate quark and gluon efficiencies included, figure on helicity angle added, and physics discussion extended
dc.identifierhttps://arxiv.org/abs/0806.0848
dc.identifierhttp://arxiv.org/abs/0806.0848
dc.identifierPhys.Rev.Lett.101:142001,2008
dc.identifierdoi:10.1103/PhysRevLett.101.142001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203895
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTop-tagging: A Method for Identifying Boosted Hadronic Tops
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