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Accès ouvert déclaré 2018 article

Medium modification of the shape of small-radius jets in central Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ TeV

52Citations signalées, ce qui n’est pas une note de qualité
149Institutions déclarées
36Pays d’affiliation déclarés

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

Le résumé fourni par la source

A bstract We present the measurement of a new set of jet shape observables for track-based jets in central Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ s N N = 2.76 TeV. The set of jet shapes includes the first radial moment or angularity, g ; the momentum dispersion, p T D ; and the difference between the leading and sub-leading constituent track transverse momentum, LeSub . These observables provide complementary information on the jet fragmentation and can constrain different aspects of the theoretical description of jet-medium interactions. The jet shapes were measured for a small resolution parameter R = 0 . 2 and were fully corrected to particle level. The observed jet shape modifications indicate that in-medium fragmentation is harder and more collimated than vacuum fragmentation as obtained by PYTHIA calculations, which were validated with the measurements of the jet shapes in proton-proton collisions at $$ \sqrt{s}=7 $$ s = 7 TeV. The comparison of the measured distributions to templates for quark and gluon-initiated jets indicates that in-medium fragmentation resembles that of quark jets in vacuum. We further argue that the observed modifications are not consistent with a totally coherent energy loss picture where the jet loses energy as a single colour charge, suggesting that the medium resolves the jet structure at the angular scales probed by our measurements ( R = 0 . 2). Furthermore, we observe that small- R jets can help to isolate purely energy loss effects from other effects that contribute to the modifications of the jet shower in medium such as the correlated background or medium response.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Medium modification of the shape of small-radius jets in central Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ TeV
Date Crossref
01/10/2018
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

Variable Energy Cyclotron CentreHomi Bhabha National InstituteUniversity of California, BerkeleyCzech Academy of Sciences, Nuclear Physics InstituteGoethe University FrankfurtLund UniversityPanjab UniversityEuropean Organization for Nuclear ResearchPolitecnico di TorinoIndian Institute of Technology BombayKorea Institute of Science & Technology InformationYale UniversityInstitute for Theoretical and Experimental PhysicsGSI Helmholtz Centre for Heavy Ion ResearchUniversidade Estadual de Campinas (UNICAMP)Kurchatov InstituteIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversidad Nacional Autónoma de MéxicoCOMSATS University IslamabadCentro Ricerche Enrico FermiIstituto Nazionale di Fisica Nucleare, Sezione di BolognaNational Academy of Sciences of UkraineBogolyubov Institute for Theoretical PhysicsUniversity of BergenSt Petersburg UniversityCentral China Normal UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringUniversity of BirminghamHeidelberg UniversityCreighton UniversityRuđer Bošković InstituteIstituto Nazionale di Fisica Nucleare, Sezione di PadovaUniversity of HoustonLawrence Berkeley National LaboratoryCentre National de la Recherche ScientifiqueLaboratoire de Physique Subatomique et des Technologies AssociéesIMT AtlantiqueInstitut National de Physique Nucléaire et de Physique des ParticulesNantes UniversitéUniversity of OsloAligarh Muslim UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CataniaGangneung–Wonju National UniversityUniversity of JammuCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversUniversity of BonnNational Institute of Science Education and ResearchIstituto Nazionale di Fisica Nucleare, Sezione di BariHUN-REN Wigner Research Centre for PhysicsHungarian Academy of SciencesDaresbury LaboratoryUniversité Clermont AuvergneWayne State UniversityMichigan UnitedJoint Institute for Nuclear ResearchPontificia Universidad Católica del PerúUniversity of CopenhagenUtrecht UniversityNational Institute for Subatomic PhysicsInha UniversityInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgBenemérita Universidad Autónoma de PueblaUniversidad Autónoma de SinaloaInstitute of Engineering PhysicsNational Research Nuclear University MEPhIPetersburg Nuclear Physics InstituteUniversity of Tennessee at KnoxvilleGauhati UniversityInstitute of Nuclear Physics, Polish Academy of SciencesCzech Technical University in PragueExcellence Cluster UniverseTechnical University of MunichBose InstituteThe University of Texas at AustinUniversity of PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PaviaUniversity of Pavol Jozef ŠafárikUniversity of MünsterUniversity of LiverpoolHospital Universitário da Universidade de São PauloHelsinki Institute of PhysicsAll-Russian Scientific Research Institute of Technical PhysicsStefan Meyer Institute for Subatomic PhysicsUniversity of TsukubaNational Research FoundationThe Ohio State UniversityTechnical University of KošiceIstituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Sezione di CagliariCentro de Aplicaciones Tecnológicas y Desarrollo NuclearUniversity of JyväskyläSaha Institute of Nuclear PhysicsLyon 1 UniversitéPusan National UniversityUniversity of Cape TownLaboratoire de Physique Subatomique et de CosmologieUniversité Grenoble AlpesInstitut de PhysiqueOak Ridge National LaboratoryUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Universidade Federal do ABCInstitute of Physics, BhubaneshwarInstitute of Space Science - INFLPR SubsidiaryUniversity of SalernoFrankfurt Institute for Advanced StudiesNational Centre for Nuclear ResearchUniversity of ZagrebIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiInstitute for Nuclear ResearchUniversity of TriesteNational and Kapodistrian University of AthensChicago State UniversityUniversidade Federal do Rio Grande do SulUniversity of SplitWarsaw University of TechnologyThe University of TokyoNagasaki Institute of Applied ScienceWestern Norway University of Applied SciencesCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalSejong UniversitySlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesYonsei UniversityKTO Karatay UniversityUniversity of Applied Sciences WormsIndian Institute of Technology IndoreJeonbuk National UniversityCalifornia Polytechnic State UniversitySuranaree University of TechnologyUniversity of South-Eastern NorwayChina Institute of Atomic EnergyUniversity of the WitwatersrandFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicIstituto Nazionale di Fisica Nucleare, Sezione di Roma IComenius University BratislavaA. Alikhanyan National LaboratoryBudker Institute of Nuclear PhysicsUniversity of RajasthanNational Nuclear Research CenterUniversity of TübingenHiroshima UniversityNara Women's UniversityShanghai Institute of Applied PhysicsIndonesian Institute of SciencesCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules

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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