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Measurement of event background fluctuations for charged particle jet reconstruction in Pb-Pb collisions at $ \sqrt {{{s_{\text{NN}}}}} = {2}{.76}\,{\text{TeV}} $

94Citations signalées, ce qui n’est pas une note de qualité
130Institutions déclarées
33Pays d’affiliation déclarés

Rattachement africain : us, cz, in, ch, hu, it, mx, kr, ru, ua, no, de, hr, fr, es, fi, sk, gb, pl, dk, nl, Afrique du Sud, cn, pe, br, se, jp, ro, gr, am, cu, tj, rs. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

Abstract The effect of event background fluctuations on charged particle jet reconstruction in Pb-Pb collisions at $ \sqrt {{{s_{\text{NN}}}}} = {2}{.76}\,{\text{TeV}} $ has been measured with the ALICE experiment. The main sources of non-statistical fluctuations are characterized based purely on experimental data with an unbiased method, as well as by using single high p t particles and simulated jets embedded into real Pb-Pb events and reconstructed with the anti-k t jet finder. The influence of a low transverse momentum cut-off on particles used in the jet reconstruction is quantified by varying the minimum track p t between 0.15 GeV/c and 2 GeV/c. For embedded jets reconstructed from charged particles with p t > 0.15 GeV/c, the uncertainty in the reconstructed jet transverse momentum due to the heavy-ion background is measured to be 11.3 GeV/c (standard deviation) for the 10% most central Pb-Pb collisions, slightly larger than the value of 11.0 GeV/c measured using the unbiased method. For a higher particle transverse momentum threshold of 2 GeV/c, which will generate a stronger bias towards hard fragmentation in the jet finding process, the standard deviation of the fluctuations in the reconstructed jet transverse momentum is reduced to 4.8-5.0 GeV/c for the 10% most central events. A non-Gaussian tail of the momentum uncertainty is observed and its impact on the reconstructed jet spectrum is evaluated for varying particle momentum thresholds, by folding the measured fluctuations with steeply falling spectra.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Measurement of event background fluctuations for charged particle jet reconstruction in Pb-Pb collisions at $ \sqrt {{{s_{\text{NN}}}}} = {2}{.76}\,{\text{TeV}} $
Date Crossref
01/03/2012
Éditeur
Springer Science and Business Media LLC
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

Lawrence Livermore National LaboratoryCzech Technical University in PragueCzech Academy of Sciences, Nuclear Physics InstituteYale UniversityPanjab UniversityEuropean Organization for Nuclear ResearchInstitute for Particle and Nuclear PhysicsHungarian Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversidad Nacional Autónoma de MéxicoVariable Energy Cyclotron CentreAligarh Muslim UniversityGangneung–Wonju National UniversityInstitute for Theoretical and Experimental PhysicsKurchatov InstituteIstituto Nazionale di Fisica Nucleare, Sezione di TorinoCentro Ricerche Enrico FermiBogolyubov Institute for Theoretical PhysicsUniversity of BergenIstituto Nazionale di Fisica Nucleare, Sezione di BariGSI Helmholtz Centre for Heavy Ion ResearchHeidelberg UniversityUniversity of MünsterThe Ohio State UniversityRuđer Bošković InstituteIstituto Nazionale di Fisica Nucleare, Sezione di PadovaCentre National de la Recherche ScientifiqueLaboratoire de Physique Subatomique et des Technologies AssociéesInstitut National de Physique Nucléaire et de Physique des ParticulesNantes UniversitéGoethe University FrankfurtUniversité Joseph FourierLaboratoire de Physique Subatomique et de CosmologieUniversidade de Santiago de CompostelaOak Ridge National LaboratoryHelsinki Institute of PhysicsUniversity of JyväskyläFrankfurt Institute for Advanced StudiesIstituto Nazionale di Fisica Nucleare, Sezione di CataniaCommissariat à l'Énergie Atomique et aux Énergies AlternativesInstitut de Recherche sur les Lois Fondamentales de l'UniversUniversité Clermont AuvergneLaboratoire de Physique de Clermont AuvergneClermont UniversitéUniversity of Pavol Jozef ŠafárikInstitute of Physics, BhubaneshwarUniversity of BirminghamInstitute of Nuclear Physics, Polish Academy of SciencesJoint Institute for Nuclear ResearchUniversity of CopenhagenInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgUniversity of HoustonPetersburg Nuclear Physics InstituteUniversity of JammuNational Institute for Subatomic PhysicsCentro de Investigaciones Energéticas, Medioambientales y TecnológicasInstitute of Engineering PhysicsNational Research Nuclear University MEPhIInstitute for High Energy PhysicsWayne State UniversitySaha Institute of Nuclear PhysicsUniversité Paris-SudInstitut de PhysiqueComenius University BratislavaAll-Russian Scientific Research Institute of Technical PhysicsUniversity of Cape TowniThemba LaboratoryCentral China Normal UniversityPontificia Universidad Católica del PerúIstituto Nazionale di Fisica Nucleare, Sezione di TriesteCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalHospital Universitário da Universidade de São PauloIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIstituto Nazionale di Fisica Nucleare, Sezione di CagliariCreighton UniversityLyon 1 UniversitéUniversidade Estadual de Campinas (UNICAMP)Utrecht UniversityLund UniversityUniversity of TsukubaPusan National UniversityUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Tecnologie Avanzate (Italy)Benemérita Universidad Autónoma de PueblaLawrence Berkeley National LaboratoryInstitute of Space Science - INFLPR SubsidiaryIndian Institute of Technology BombayUniversity of SalernoNational Centre for Nuclear ResearchUniversity of OsloHøgskolen i BergenInstitute for Nuclear ResearchNational and Kapodistrian University of AthensChicago State UniversityWarsaw University of TechnologyUniversidad Autónoma de SinaloaUniversity of RajasthanUniversity of SplitThe University of TokyoSejong UniversityKorea Institute of Science & Technology InformationA. Alikhanyan National LaboratorySlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesTechnische Universität DarmstadtYonsei UniversityUniversity of Applied Sciences WormsCalifornia Polytechnic State UniversityAzienda Sanitaria Locale AlessandriaTH Köln - University of Applied SciencesChina Institute of Atomic EnergyCentro de Aplicaciones Tecnológicas y Desarrollo NuclearInstitute for PhysicsLomonosov Moscow State UniversityMoscow State UniversityHiroshima UniversityCzech Academy of SciencesFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicThe University of Texas at AustinUniversity of Tennessee SystemUniversity of Tennessee at KnoxvilleBudker Institute of Nuclear PhysicsIstituto Nazionale di Fisica Nucleare, Sezione di Roma ISapienza University of RomeInstitute of Economic SciencesIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di LegnaroPurdue University West LafayetteCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesUniversity of Tübingen

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

High-Energy Particle Collisions ResearchParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle Interactions

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