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Accès ouvert déclaré 2020 article

Dielectron production in proton-proton and proton-lead collisions at sNN=5.02TeV

13Citations signalées — pas une note de qualité
149Institutions déclarées
36Pays d’affiliation déclarés

Résumé fourni par la source

The first measurements of dielectron production at midrapidity $(\left|{\ensuremath{\eta}}_{\mathrm{e}}\right|<0.8)$ in proton--proton and proton--lead collisions at $\sqrt{{s}_{\mathrm{NN}}}=5.02\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$ at the LHC are presented. The dielectron cross section is measured with the ALICE detector as a function of the invariant mass ${m}_{\mathrm{ee}}$ and the pair transverse momentum ${p}_{\mathrm{T},\mathrm{ee}}$ in the ranges ${m}_{\mathrm{ee}}<3.5$ $\mathrm{GeV}/{c}^{2}$ and ${p}_{\mathrm{T},\mathrm{ee}}<8$ $\mathrm{GeV}/c$, in both collision systems. In proton--proton collisions, the charm and beauty cross sections are determined at midrapidity from a fit to the data with two different event generators. This complements the existing dielectron measurements performed at $\sqrt{s}=7$ and 13 TeV. The slope of the $\sqrt{s}$ dependence of the three measurements is described by FONLL calculations. The dielectron cross section measured in proton--lead collisions is in agreement, within the current precision, with the expected dielectron production without any nuclear matter effects for ${\mathrm{e}}^{+}{\mathrm{e}}^{\ensuremath{-}}$ pairs from open heavy-flavor hadron decays. For the first time at LHC energies, the dielectron production in proton--lead and proton--proton collisions are directly compared at the same $\sqrt{{s}_{\mathrm{NN}}}$ via the dielectron nuclear modification factor ${R}_{\mathrm{pPb}}$. The measurements are compared to model calculations including cold nuclear matter effects, or additional sources of dielectrons from thermal radiation.

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Contrôle bibliographique ouvert

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

Titre Crossref
Dielectron production in proton-proton and proton-lead 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>5.02</mml:mn><mml:mspace width="0.16em"/><mml:mi>TeV</mml:mi></mml:mrow></mml:math>
Date Crossref
25/11/2020
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 ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

Variable Energy Cyclotron CentreHomi Bhabha National InstituteCzech Academy of Sciences, Nuclear Physics InstituteGoethe University FrankfurtLund UniversityPanjab UniversityEuropean Organization for Nuclear ResearchPolitecnico di TorinoCentro Ricerche Enrico FermiIstituto Nazionale di Fisica Nucleare, Sezione di BolognaAligarh Muslim UniversityKorea Institute of Science & Technology InformationIndonesian Institute of SciencesKurchatov InstituteGSI Helmholtz Centre for Heavy Ion ResearchFudan UniversityUniversidade Estadual de Campinas (UNICAMP)Istituto Nazionale di Fisica Nucleare, Sezione di TorinoCentral China Normal UniversityUniversidad Nacional Autónoma de MéxicoCOMSATS University IslamabadUniversity of HoustonNational Academy of Sciences of UkraineBogolyubov Institute for Theoretical PhysicsUniversity of BergenSt Petersburg UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringUniversity of MünsterHeidelberg UniversityCreighton UniversityRuđer Bošković InstituteIstituto Nazionale di Fisica Nucleare, Sezione di PadovaLawrence 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 OsloLaboratoire de Physique des 2 Infinis Irène Joliot-CurieIstituto 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 BonnTechnical University of MunichBose InstituteHUN-REN Wigner Research Centre for PhysicsDaresbury LaboratoryUniversité Clermont AuvergneUniversity of LiverpoolWayne State UniversityJoint Institute for Nuclear ResearchIndian Institute of Technology BombayPontificia Universidad Católica del PerúUniversity of CopenhagenYale UniversityUtrecht UniversityNational Institute for Subatomic PhysicsInha UniversityInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgInstitute of Engineering PhysicsNational Research Nuclear University MEPhIPetersburg Nuclear Physics InstituteUniversity of Tennessee at KnoxvilleInstitute of Space Science - INFLPR SubsidiaryGauhati UniversityIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiCzech Technical University in PragueThe University of Texas at AustinUniversity of PaviaOak Ridge National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di CagliariUniversity of Pavol Jozef ŠafárikUniversity of BresciaHospital Universitário da Universidade de São PauloIstituto Nazionale di Fisica Nucleare, Sezione di BariPolytechnic University of BariAll-Russian Scientific Research Institute of Technical PhysicsStefan Meyer Institute for Subatomic PhysicsUniversity of the WitwatersrandNational Research FoundationInstitute of Nuclear Physics, Polish Academy of SciencesUniversidad Autónoma de SinaloaBenemérita Universidad Autónoma de PueblaIstituto Nazionale di Fisica Nucleare, Sezione di TriesteSaha Institute of Nuclear PhysicsLyon 1 UniversitéUniversity of TsukubaUniversity of Cape TownLaboratoire de Physique Subatomique et de CosmologieUniversité Grenoble AlpesUniversity of TriesteUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Universidade Federal do ABCWarsaw University of TechnologyNational Institute of Science Education and ResearchUniversity of SalernoFrankfurt Institute for Advanced StudiesIndian Institute of Technology IndoreNational Centre for Nuclear ResearchCentro de Aplicaciones Tecnológicas y Desarrollo NuclearUniversity of California, BerkeleyInstitute for Nuclear ResearchUniversity of ZagrebUniversity of BirminghamNational and Kapodistrian University of AthensChicago State UniversityNational Nuclear Research CenterUniversidade Federal do Rio Grande do SulUniversity of SplitA. Alikhanyan National LaboratoryThe University of TokyoNagasaki Institute of Applied ScienceWestern Norway University of Applied SciencesCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalThe Ohio State UniversityTechnical University of KošiceSlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesKTO Karatay UniversityUniversity of Applied Sciences WormsYonsei UniversityUniversity of JyväskyläJeonbuk National UniversityPusan National UniversitySejong UniversityCalifornia Polytechnic State UniversitySuranaree University of TechnologyUniversity of South-Eastern NorwayChina Institute of Atomic EnergyUniversity of MessinaFZU ‒ 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 RajasthanHelsinki Institute of PhysicsInstitute of Physics, BhubaneshwarUniversity of TübingenHiroshima UniversityNara Women's UniversityCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesUniversity of Science and Technology of China

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Sujets associés

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

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