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Investigating strangeness enhancement with multiplicity in pp collisions using angular correlations

2Citations signalées — pas une note de qualité
144Institutions déclarées
34Pays d’affiliation déclarés

Résumé fourni par la source

A bstract A study of strange hadron production associated with hard scattering processes and with the underlying event is conducted to investigate the origin of the enhanced production of strange hadrons in small collision systems characterised by large charged-particle multiplicities. For this purpose, the production of the single-strange meson $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 and the double-strange baryon Ξ ± is measured, in each event, in the azimuthal direction of the highest- p T particle (“trigger” particle), related to hard scattering processes, and in the direction transverse to it in azimuth, associated with the underlying event, in pp collisions at $$ \sqrt{s} $$ s = 5.02 TeV and $$ \sqrt{s} $$ s = 13 TeV using the ALICE detector at the LHC. The per-trigger yields of $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 and Ξ ± are dominated by the transverse-to-leading production (i.e., in the direction transverse to the trigger particle), whose contribution relative to the toward-leading production is observed to increase with the event charged-particle multiplicity. The transverse-to-leading and the toward-leading Ξ ± / $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 yield ratios increase with the multiplicity of charged particles, suggesting that strangeness enhancement with multiplicity is associated with both hard scattering processes and the underlying event. The relative production of Ξ ± with respect to $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 is higher in transverse-to-leading processes over the whole multiplicity interval covered by the measurement. The $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 and Ξ ± per-trigger yields and yield ratios are compared with predictions of three different phenomenological models, namely P ythia 8.2 with the Monash tune, P ythia 8.2 with ropes and EPOS LHC. The comparison shows that none of them can quantitatively describe either the transverse-to-leading or the toward-leading yields of $$ {\textrm{K}}_{\textrm{S}}^0 $$ K S 0 and Ξ ± .

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Investigating strangeness enhancement with multiplicity in pp collisions using angular correlations
Date Crossref
27/09/2024
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

Centre National de la Recherche ScientifiqueUniversité Clermont AuvergneLaboratoire de Physique de Clermont AuvergneInstitut National de Physique Nucléaire et de Physique des ParticulesCzech Academy of Sciences, Nuclear Physics InstituteHomi Bhabha National InstituteEuropean Organization for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di TorinoPolitecnico di TorinoOsservatorio astronomico di BolognaAligarh Muslim UniversityKorea Institute of Science & Technology InformationUniversity of Pavol Jozef ŠafárikGoethe University FrankfurtFrankfurt Institute for Advanced StudiesGSI Helmholtz Centre for Heavy Ion ResearchCentral China Normal UniversityUniversidad Nacional Autónoma de MéxicoUniversity of HoustonSungkyunkwan UniversityUniversity of BergenIstituto Nazionale di Fisica Nucleare, Sezione di CagliariIstituto Nazionale di Fisica Nucleare, Sezione di BariTechnical University of MunichBenemérita Universidad Autónoma de PueblaHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicUniversity of DerbyUniversity of MünsterHeidelberg UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PadovaIstituto Nazionale di Fisica Nucleare, Sezione di BolognaLawrence Berkeley National LaboratoryLaboratoire de Physique Subatomique et des Technologies AssociéesIMT AtlantiqueNantes UniversitéLaboratoire de Physique Subatomique et de CosmologieUniversité Grenoble AlpesHospital Universitário da Universidade de São PauloUniversity of OsloYale UniversityThe University of TokyoIstituto Nazionale di Fisica Nucleare, Sezione di CataniaGangneung–Wonju National UniversityUniversity of Science and Technology of ChinaIndian Institute of Technology IndoreUniversity of JammuCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversJagiellonian UniversityAGH University of KrakowBose InstituteNational and Kapodistrian University of AthensGauhati UniversityHUN-REN Wigner Research Centre for PhysicsUniversity of LiverpoolLund UniversityIndian Institute of Technology BombayPontificia Universidad Católica del PerúUniversity of CopenhagenInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgUniversidad Autónoma de SinaloaInstitute of Space Science - INFLPR SubsidiaryIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiCzech Technical University in PragueThe University of Texas at AustinUniversity of PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PaviaOak Ridge National LaboratoryPusan National UniversityUniversity of BresciaPolytechnic University of BariStefan Meyer Institute for Subatomic PhysicsUniversity of the WitwatersrandNational Research FoundationPolish Academy of SciencesUniversitatea Națională de Știință și Tehnologie Politehnica BucureștiLyon 1 UniversitéInstitut de PhysiqueWarsaw University of TechnologyFudan UniversityUniversidade Estadual de Campinas (UNICAMP)Max Planck Institute for PhysicsInha UniversityNational Institute for Subatomic PhysicsUniversity of TsukubaNational Agency for New Technologies, Energy and Sustainable Economic DevelopmentUniversity of BirminghamLaboratoire de Physique des 2 Infinis Irène Joliot-CurieUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Universidade Federal do ABCUniversity of California SystemCentro de Aplicaciones Tecnológicas y Desarrollo NuclearUniversity of Cape TownComenius University BratislavaHiroshima UniversityIstituto Nazionale di Fisica Nucleare, Sezione di TriesteSaga UniversityChicago State UniversityUniversity of KansasUniversidade Federal do Rio Grande do SulUniversity of Tennessee at KnoxvilleNagasaki Institute of Applied ScienceWayne State UniversityUniversity of SplitUtrecht UniversityA. Alikhanyan National LaboratoryYonsei UniversityUniversity of JyväskyläUniversity of BonnWestern Norway University of Applied SciencesCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalThe Ohio State UniversityTechnical University of KošiceSouth Great Plain Regional Innovation AgencyNational Research and Innovation AgencyChina Institute of Atomic EnergySuranaree University of TechnologySlovak Academy of SciencesYıldız Technical UniversityKTO Karatay UniversityUniversity of ZagrebTechnologie- und Förderzentrum im Kompetenzzentrum für Nachwachsende RohstoffeJeonbuk National UniversitySejong UniversityCalifornia Polytechnic State UniversityPanjab UniversityNational Centre for Nuclear ResearchUniversity of South-Eastern NorwayDaresbury LaboratoryUniversity of MessinaUniversity of FoggiaHelsinki Institute of PhysicsChungbuk National UniversityChina University of GeosciencesCreighton UniversityUniversity of WrocławNational Nuclear Research CenterUniversity of TübingenNara Women's UniversityNational Academy of Sciences of Ukraine

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

Sujets associés

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

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