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Observation of Strong Nuclear Suppression in Exclusive J / ψ Photoproduction in Au + Au Ultraperipheral Collisions at RHIC

16Citations signalées, ce qui n’est pas une note de qualité
79Institutions déclarées
14Pays d’affiliation déclarés

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Le résumé fourni par la source

We report a measurement of exclusive $J/\ensuremath{\psi}$ and $\ensuremath{\psi}(2s)$ photoproduction in $\mathrm{Au}+\mathrm{Au}$ ultraperipheral collisions at $\sqrt{{s}_{\mathrm{NN}}}=200\text{ }\text{ }\mathrm{GeV}$ using the STAR detector. For the first time, (i) the $\ensuremath{\psi}(2s)$ photoproduction in midrapidity at the Relativistic Heavy-Ion Collider has been experimentally measured; (ii) nuclear suppression factors are measured for both the coherent and incoherent $J/\ensuremath{\psi}$ production. At average photon-nucleon center-of-mass energy of 25.0 GeV, the coherent and incoherent $J/\ensuremath{\psi}$ cross sections of Au nuclei are found to be $71\ifmmode\pm\else\textpm\fi{}10%$ and $36\ifmmode\pm\else\textpm\fi{}7%$, respectively, of that of free protons. The stronger suppression observed in the incoherent production provides a new experimental handle to study the initial-state parton density in heavy nuclei. Data are compared with theoretical models quantitatively.

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Le contrôle bibliographique ouvert

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

Titre Crossref
Observation of Strong Nuclear Suppression in Exclusive <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> </mml:mrow> </mml:math> Photoproduction in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>Au</mml:mi> <mml:mo stretchy="false">+</mml:mo> <mml:mi>Au</mml:mi> </mml:mrow> </mml:math> Ultraperipheral Collisions at RHIC
Date Crossref
31/07/2024
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

American University in CairoMitchell InstituteTexas A&M UniversityCzech Technical University in PragueJagiellonian UniversityAGH University of KrakowThe Ohio State UniversityPanjab UniversityArgonne National LaboratoryBall State UniversityVariable Energy Cyclotron CentreBrookhaven National LaboratoryIndian Institute of Technology PatnaAbilene Christian UniversityUniversity of TarapacáUniversity of HoustonUniversity of California, RiversideUniversity of California SystemUniversity of JammuState University of New YorkStony Brook UniversityEötvös Loránd UniversityCzech Academy of Sciences, Nuclear Physics InstituteChinese Academy of SciencesShanghai Institute of Applied PhysicsYale UniversityUniversity of California, DavisLawrence Berkeley National LaboratoryUniversity of California, Los AngelesIndiana University BloomingtonIndiana UniversityNational Institute of Technology DurgapurShandong UniversityFudan UniversityTsinghua UniversityUniversity of California, BerkeleyUniversity of Illinois ChicagoHeidelberg UniversityHeidelberg UniversityIndian Institute of Science Education and Research KolkataIndian Institute of Science Education and Research MohaliIndian Institute of Science Education and Research, BhopalIndian Institute of Science Education and Research BerhampurIndian Institute of Science Education and Research, TirupatiKent State UniversityRice UniversityUniversity of TsukubaUniversity of KentuckyUniversity of CalabriaPurdue University West LafayetteNational Cheng Kung UniversitySouthern Connecticut State UniversityInstitute of Modern PhysicsTechnische Universität DarmstadtTemple CollegeTemple UniversityValparaiso UniversityWarsaw University of TechnologyWayne State UniversityUnited States Naval AcademyUniversity of Chinese Academy of SciencesCentral China Normal UniversityUniversity of Science and Technology of ChinaFrankfurt Institute for Advanced StudiesLehigh UniversityWuhan University of Science and TechnologyGuangxi Normal UniversitySouth China Normal UniversityThe University of Texas at AustinNational Institute of Science Education and ResearchSejong UniversityRutgers, The State University of New JerseyInstitute of Nuclear PhysicsInstitute of Nuclear Physics, Polish Academy of SciencesMax Planck Institute for PhysicsCreighton UniversityHuzhou Normal UniversityMichigan State UniversityChongqing University

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Les sujets associés

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

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