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Accès ouvert déclaré 2020 article

Investigation into the event-activity dependence of ϒ(nS) relative production in proton-proton collisions at $$ \sqrt{s} $$ = 7 TeV

28Citations signalées — pas une note de qualité
206Institutions déclarées
45Pays d’affiliation déclarés

Résumé fourni par la source

Abstract The ratios of the production cross sections between the excited ϒ(2S) and ϒ(3S) mesons and the ϒ(1S) ground state, detected via their decay into two muons, are studied as a function of the number of charged particles in the event. The data are from proton-proton collisions at $$ \sqrt{s} $$ s = 7 TeV, corresponding to an integrated luminosity of 4.8 fb−1, collected with the CMS detector at the LHC. Evidence of a decrease in these ratios as a function of the particle multiplicity is observed, more pronounced at low transverse momentum $$ {p}_{\mathrm{T}}^{\upmu \upmu} $$ pTμμ . For ϒ(nS) mesons with $$ {p}_{\mathrm{T}}^{\upmu \upmu} $$ pTμμ >7 GeV, where most of the data were collected, the correlation with multiplicity is studied as a function of the underlying event transverse sphericity and the number of particles in a cone around the ϒ(nS) direction. The ratios are found to be multiplicity independent for jet-like events. The mean $$ {p}_{\mathrm{T}}^{\upmu \upmu} $$ pTμμ values for the ϒ(nS) states as a function of particle multiplicity are also measured and found to grow more steeply as their mass increases.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Investigation into the event-activity dependence of ϒ(nS) relative production in proton-proton collisions at $$ \sqrt{s} $$ = 7 TeV
Date Crossref
01/11/2020
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 ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

A. Alikhanyan National LaboratoryInstitute of High Energy PhysicsUniversity of AntwerpVrije Universiteit BrusselUniversité Libre de BruxellesGhent University HospitalUCLouvainCentro Brasileiro de Pesquisas FísicasUniversidade do Estado do Rio de JaneiroUniversidade Estadual Paulista (Unesp)Universidade Federal do ABCKarlsruhe Institute of TechnologyBulgarian Academy of SciencesInstitute for Nuclear Research and Nuclear EnergySofia University "St. Kliment Ohridski"Beihang UniversityTsinghua UniversityInstitute of High Energy PhysicsPeking UniversityZhejiang UniversityUniversidad de Los AndesUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteUniversity of CyprusCharles UniversityNational Polytechnic SchoolUniversidad San Francisco de QuitoAcademy of Scientific Research and TechnologyNational Institute of Chemical Physics and BiophysicsUniversity of HelsinkiHelsinki Institute of PhysicsLappeenranta-Lahti University of TechnologyCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversCentre National de la Recherche ScientifiqueÉcole PolytechniqueInstitut National de Physique Nucléaire et de Physique des ParticulesLaboratoire Leprince-RinguetInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesLyon 1 UniversitéInstitute of Nuclear Physics of LyonGeorgian Technical UniversityTbilisi State UniversityRWTH Aachen UniversityDeutsches Elektronen-Synchrotron DESYUniversität HamburgNational Centre of Scientific Research "Demokritos"Institute of Nuclear and Particle PhysicsNational and Kapodistrian University of AthensNational Technical University of AthensUniversity of IoanninaEötvös Loránd UniversityHUN-REN Wigner Research Centre for PhysicsHUN-REN Institute for Nuclear ResearchUniversity of DebrecenKároly Róbert University CollegeIndian Institute of Science BangaloreNational Institute of Science Education and ResearchPanjab UniversityUniversity of DelhiSaha Institute of Nuclear PhysicsIndian Institute of Technology MadrasBhabha Atomic Research CentreTata Institute of Fundamental ResearchIndian Institute of Science Education and Research PuneInstitute for Research in Fundamental SciencesUniversity College DublinIstituto Nazionale di Fisica Nucleare, Sezione di BariIstituto Nazionale di Fisica Nucleare, Sezione di BolognaIstituto Nazionale di Fisica Nucleare, Sezione di CataniaIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIstituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaIstituto Nazionale di Fisica Nucleare, Sezione di NapoliIstituto Nazionale di Fisica Nucleare, Sezione di PadovaUniversity of PaduaIstituto Nazionale di Fisica Nucleare, Sezione di PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale di Fisica Nucleare, Sezione di Roma IIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversity of TriesteIstituto Nazionale di Fisica Nucleare, Sezione di TriesteKyungpook National UniversityChonnam National UniversityHanyang UniversityKorea UniversityKyung Hee UniversitySejong UniversitySeoul National UniversityUniversity of SeoulSungkyunkwan UniversityRiga Technical UniversityVilnius UniversityUniversity of MalayaUniversidad de SonoraInstituto Politécnico NacionalCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalIbero American UniversityBenemérita Universidad Autónoma de PueblaAutonomous University of San Luis PotosíUniversity of MontenegroUniversity of AucklandUniversity of CanterburyAbdus Salam Centre for PhysicsAGH University of KrakowNational Centre for Nuclear ResearchUniversity of WarsawLIP - Laboratory of Instrumentation and Experimental Particle PhysicsJoint Institute for Nuclear ResearchPetersburg Nuclear Physics InstituteInstitute for Nuclear ResearchKurchatov InstituteInstitute for Theoretical and Experimental PhysicsMoscow Institute of Physics and TechnologyNational Research Nuclear University MEPhIP.N. Lebedev Physical Institute of the Russian Academy of SciencesLomonosov Moscow State UniversityNovosibirsk State UniversityInstitute for High Energy PhysicsNational Research Tomsk State UniversityTomsk Polytechnic UniversityUniversity of BelgradeVinča Institute of Nuclear SciencesCentro de Investigaciones Energéticas, Medioambientales y TecnológicasUniversidad Autónoma de MadridUniversidad de OviedoUniversidad de CantabriaInstituto de Física de CantabriaUniversity of ColomboUniversity of RuhunaEuropean Organization for Nuclear ResearchPaul Scherrer InstituteETH ZurichUniversity of ZurichNational Central UniversityNational Taiwan UniversityChulalongkorn UniversityCukurova UniversityMiddle East Technical UniversityBoğaziçi UniversityIstanbul Technical UniversityIstanbul UniversityInstitute for Scintillation MaterialsKharkiv Institute of Physics and TechnologyUniversity of BristolRutherford Appleton LaboratoryImperial College LondonBrunel University of LondonBaylor UniversityUniversity of AmericaCatholic University of AmericaUniversity of AlabamaBoston UniversityBrown UniversityUniversity of California, DavisUniversity of California, Los AngelesUniversity of California, RiversideUniversity of California San DiegoUniversity of California, Santa BarbaraCalifornia Institute of TechnologyCarnegie Mellon UniversityUniversity of Colorado BoulderUniversity of Colorado SystemCornell UniversityFermi National Accelerator LaboratoryUniversity of FloridaFlorida International UniversityFlorida State UniversityFlorida Institute of TechnologyUniversity of Illinois ChicagoUniversity of IowaJohns Hopkins UniversityUniversity of KansasKansas State UniversityLawrence Livermore National LaboratoryUniversity of Maryland, College ParkMassachusetts Institute of TechnologyUniversity of MinnesotaUniversity of MississippiUniversity of Nebraska–LincolnUniversity at Buffalo, State University of New YorkNortheastern UniversityNorthwestern UniversityUniversity of Notre DameThe Ohio State UniversityPrinceton UniversityUniversity of Puerto Rico-MayaguezPurdue University West LafayettePurdue University NorthwestRice UniversityUniversity of RochesterRutgers, The State University of New JerseyUniversity of Tennessee at KnoxvilleTexas A&M UniversityTexas Tech UniversityVanderbilt UniversityUniversity of VirginiaWayne State UniversityUniversity of Wisconsin–Madison

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Sujets associés

Particle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions

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