Resolving boosted jets with XCone

We show how the recently proposed XCone jet algorithm [1] smoothly interpolates between resolved and boosted kinematics. When using standard jet algorithms to reconstruct the decays of hadronic resonances like top quarks and Higgs bosons, one typically needs separate analysis strategies to handle th...

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Bibliographic Details
Main Authors: Thaler, Jesse, Wilkason, Thomas F.
Other Authors: Massachusetts Institute of Technology. Center for Theoretical Physics
Format: Article
Language:English
Published: Springer Berlin Heidelberg/International School for Advanced Studies (SISSA) 2016
Online Access:http://hdl.handle.net/1721.1/103283
https://orcid.org/0000-0002-2406-8160
Description
Summary:We show how the recently proposed XCone jet algorithm [1] smoothly interpolates between resolved and boosted kinematics. When using standard jet algorithms to reconstruct the decays of hadronic resonances like top quarks and Higgs bosons, one typically needs separate analysis strategies to handle the resolved regime of well-separated jets and the boosted regime of fat jets with substructure. XCone, by contrast, is an exclusive cone jet algorithm that always returns a fixed number of jets, so jet regions remain resolved even when (sub)jets are overlapping in the boosted regime. In this paper, we perform three LHC case studies--dijet resonances, Higgs decays to bottom quarks, and all-hadronic top pairs--that demonstrate the physics applications of XCone over a wide kinematic range.