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Accès ouvert déclaré 2019 article

Measurement of dielectron production in central Pb-Pb collisions at sNN=2.76TeV

27Citations signalées, ce qui n’est pas une note de qualité
150Institutions déclarées
36Pays d’affiliation déclarés

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

Le résumé fourni par la source

The first measurement of dielectron (${\mathrm{e}}^{+}{\mathrm{e}}^{\ensuremath{-}}$) production in central $(0--10%)$ Pb--Pb collisions at $\sqrt{{\mathit{s}}_{\mathrm{NN}}}=2.76\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$ at the LHC is presented. The dielectron invariant-mass spectrum is compared to the expected contributions from hadron decays in the invariant-mass range $0<{m}_{\mathrm{ee}}<3.5\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/{\mathit{c}}^{2}$. The ratio of data and the cocktail of hadronic contributions without vacuum ${\ensuremath{\rho}}^{0}$ is measured in the invariant-mass range $0.15<{m}_{\mathrm{ee}}<0.7\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/{\mathit{c}}^{2}$, where an excess of dielectrons is observed in other experiments, and its value is $1.40\ifmmode\pm\else\textpm\fi{}0.28\phantom{\rule{4pt}{0ex}}(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.08\phantom{\rule{4pt}{0ex}}(\mathrm{syst}.)\ifmmode\pm\else\textpm\fi{}0.27\phantom{\rule{4pt}{0ex}}(\mathrm{cocktail})$. The dielectron spectrum measured in the invariant mass range $0<{m}_{\mathrm{ee}}<1\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/{\mathit{c}}^{2}$ is consistent with the predictions from two theoretical model calculations that include thermal dielectron production from both partonic and hadronic phases with in-medium broadened ${\ensuremath{\rho}}^{0}$ meson. The fraction of direct virtual photons over inclusive virtual photons is extracted for dielectron pairs with invariant mass $0.1<{m}_{\mathrm{ee}}<0.3\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/{\mathit{c}}^{2}$ and in the transverse-momentum intervals $1<{p}_{\mathrm{T},\mathrm{ee}}<2\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/\mathit{c}$ and $2<{p}_{\mathrm{T},\mathrm{ee}}<4\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/\mathit{c}$. The measured fraction of virtual direct photons is consistent with the measurement of real direct photons by ALICE and with the expectations from previous dielectron measurements at RHIC within the experimental uncertainties.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.

Titre Crossref
Measurement of dielectron production in central Pb-Pb collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mi>NN</mml:mi></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn><mml:mspace width="0.16em"/><mml:mi>TeV</mml:mi></mml:mrow></mml:math>
Date Crossref
14/02/2019
Éditeur
American Physical Society (APS)
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 InstituteLund 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 BergenGoethe University FrankfurtSt Petersburg UniversityCentral China Normal UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringUniversity of BirminghamUniversity of MünsterHeidelberg 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 UniversitéExcellence Cluster UniverseTechnical University of MunichUniversity of OsloAligarh Muslim UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CataniaGangneung–Wonju National UniversityInha 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 UniversityJoint Institute for Nuclear ResearchPontificia Universidad Católica del PerúUniversity of CopenhagenUtrecht UniversityNational Institute for Subatomic PhysicsInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgBenemérita Universidad Autónoma de PueblaUniversidad Autónoma de SinaloaInstitute of Engineering PhysicsNational Research Nuclear University MEPhIPetersburg Nuclear Physics InstituteUniversity of Tennessee SystemUniversity of Tennessee at KnoxvilleGauhati UniversityInstitute of Nuclear Physics, Polish Academy of SciencesIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiCzech Technical University in PragueBose InstituteThe University of Texas at AustinUniversity of PaviaUniversity of Pavol Jozef ŠafárikUniversity of BresciaUniversity 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 TownSlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesLaboratoire 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 SubsidiaryIndian Institute of Technology IndoreUniversity of SalernoFrankfurt Institute for Advanced StudiesNational Centre for Nuclear ResearchUniversity of ZagrebInstitute for Nuclear ResearchUniversity of TriesteNational and Kapodistrian University of AthensChicago State UniversityUniversidade Federal do Rio Grande do SulUniversity of SplitWarsaw University of TechnologyA. Alikhanyan National LaboratoryThe University of TokyoNagasaki Institute of Applied ScienceWestern Norway University of Applied SciencesCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalSejong UniversityYonsei UniversityKTO Karatay UniversityUniversity of Applied Sciences WormsJeonbuk 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 RepublicUniversity of FoggiaIstituto Nazionale di Fisica Nucleare, Sezione di Roma IComenius University BratislavaBudker 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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