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dc.contributor.authorBertolini, Daniele
dc.contributor.authorChan, Tucker R.
dc.contributor.authorThaler, Jesse
dc.date.accessioned2014-07-24T16:31:19Z
dc.date.available2014-07-24T16:31:19Z
dc.date.issued2014-04
dc.date.submitted2014-01
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/1721.1/88483
dc.description.abstractWe introduce a new class of event shapes to characterize the jet-like structure of an event. Like traditional event shapes, our observables are infrared/collinear safe and involve a sum over all hadrons in an event, but like a jet clustering algorithm, they incorporate a jet radius parameter and a transverse momentum cut. Three of the ubiquitous jet-based observables - jet multiplicity, summed scalar transverse momentum, and missing transverse momentum - have event shape counterparts that are closely correlated with their jet-based cousins. Due to their “local” computational structure, these jet-like event shapes could potentially be used for trigger-level event selection at the LHC. Intriguingly, the jet multiplicity event shape typically takes on non-integer values, highlighting the inherent ambiguity in defining jets. By inverting jet multiplicity, we show how to characterize the transverse momentum of the n-th hardest jet without actually finding the constituents of that jet. Since many physics applications do require knowledge about the jet constituents, we also build a hybrid event shape that incorporates (local) jet clustering information. As a straightforward application of our general technique, we derive an event-shape version of jet trimming, allowing event-wide jet grooming without explicit jet identification. Finally, we briefly mention possible applications of our method for jet substructure studies.en_US
dc.description.sponsorshipAlfred P. Sloan Foundation (Sloan Research Fellowship)en_US
dc.description.sponsorshipUnited States. Dept. of Energy (DOE Early Career research program DE-FG02-11ER-41741)en_US
dc.description.sponsorshipIstituto nazionale di fisica nucleare (INFN) (Bruno Rossi Fellowship)en_US
dc.description.sponsorshipU.S. LHC Theory Initiative (Graduate Fellowship)en_US
dc.description.sponsorshipUnited States. Dept. of Energy (cooperative research agreement DE-FG02-05ER-41360)en_US
dc.language.isoen_US
dc.publisherSpringer-Verlag Berlin Heidelbergen_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/jhep04(2014)013en_US
dc.rightsCreative Commons Attributionen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceSpringer-Verlagen_US
dc.titleJet observables without jet algorithmsen_US
dc.typeArticleen_US
dc.identifier.citationBertolini, Daniele, Tucker Chan, and Jesse Thaler. “Jet Observables Without Jet Algorithms.” J. High Energ. Phys. 2014, no. 4 (April 2014).en_US
dc.contributor.departmentMassachusetts Institute of Technology. Center for Theoretical Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Laboratory for Nuclear Scienceen_US
dc.contributor.mitauthorBertolini, Danieleen_US
dc.contributor.mitauthorChan, Tucker R.en_US
dc.contributor.mitauthorThaler, Jesseen_US
dc.relation.journalJournal of High Energy Physicsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBertolini, Daniele; Chan, Tucker; Thaler, Jesseen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-2406-8160
dspace.mitauthor.errortrue
mit.licensePUBLISHER_CCen_US


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