Observation of Coherent ϕ(1020) Meson Photoproduction in Ultraperipheral PbPb Collisions at sNN=5.36 TeV
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213Institutions déclarées
52Pays d’affiliation déclarés
Rattachement africain : am, at, be, fr, de, br, us, cl, cn, co, hr, cy, cz, ec, Égypte, ee, fi, tr, ge, gr, Nigéria, hu, in, ir, ie, it, nl, kr, kw, lv, lt, ph, my, id, mx, do, me, gb, pk, pl, pt, rs, es, lk, ch, tw, th, Tunisie, ua, ro, pr, qa. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The first observation of coherent ϕ(1020) meson photoproduction off heavy nuclei is presented using ultraperipheral lead-lead collisions at a center-of-mass energy per nucleon pair of 5.36 TeV. The data were collected by the CMS experiment and correspond to an integrated luminosity of 1.62 μb−1. The ϕ(1020) meson signals are reconstructed via the K+K− decay channel. The production cross section is presented as a function of the ϕ(1020) meson rapidity in the range 0.3<|y|<1.0, probing gluons that carry a fraction of the nucleon momentum (x) around 10-4. The observed cross section exhibits little dependence on rapidity and is significantly suppressed, by a factor of ∼5, compared to a baseline model that treats a nucleus as a collection of free nucleons. Theoretical models that incorporate the nuclear shadowing effect generally provide a better description of the ϕ(1020) data than those incorporating gluon saturation. This study establishes a powerful new tool for exploring nuclear effects and nuclear gluonic structure in the small-x regime at a unique energy scale bridging the perturbative and nonperturbative quantum chromodynamics domains.
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Alikhanyan National LaboratoryTU WienUniversity of AntwerpVrije Universiteit BrusselGene Therapy LaboratoryEuropean Union of Medical SpecialistsDeutsches Elektronen-Synchrotron DESYUCLouvainUniversidade do Estado do Rio de JaneiroSofie Biosciences (United States)SurgOne Foregut InstituteUniversity of TarapacáBeihang UniversityTsinghua UniversityInstitute of High Energy PhysicsSouth China Normal UniversityNanjing Normal UniversityShanghaiTech UniversityFudan UniversityEIA UniversityUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteUniversity of CyprusCharles UniversitySt. Charles HospitalNational Polytechnic SchoolUniversidad San Francisco de QuitoModern AcademyZewail City of Science and TechnologyAin Shams UniversityBritish University in EgyptFayoum UniversityNational Institute of Chemical Physics and BiophysicsHelsinki Institute of PhysicsLappeenranta-Lahti University of TechnologyInstitut de Recherche sur les Lois Fondamentales de l'UniversPurdue University West LafayetteÉcole PolytechniqueUniversité de Haute-AlsaceInstitut Pluridisciplinaire Hubert CurienInstitute of Nuclear Physics of LyonInstitut de Physique des 2 Infinis de LyonIstinye UniversityGeorgian Technical UniversityTbilisi State UniversityFH AachenRWTH Aachen UniversityBrandenburg University of Applied SciencesForschungszentrum JülichKarlsruhe Institute of TechnologyDemocritus University of ThraceAthens State UniversityNTL Institute for Applied Behavioral ScienceAbiola Ajimobi Technical University IbadanUniversity of IoanninaInstitute for Particle and Nuclear PhysicsEötvös Loránd UniversityUniversity of DebrecenPanjab UniversityUniversity of DelhiIndian Institute of Technology KanpurVisva-Bharati UniversityIndian Institute of Technology MadrasIndian Institute of Management BangaloreIndian Institute of Science BangaloreTata Institute of Fundamental ResearchNational Institute of Science Education and ResearchIndian Institute of Technology BhubaneswarInstitute of Physics, BhubaneshwarIndian Institute of Science Education and Research PuneUniversity of HyderabadIsfahan University of TechnologySharif University of TechnologyUniversity of Science and Technology of MazandaranUniversity College DublinIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroHelwan UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaIstituto Nazionale di Fisica Nucleare, Sezione di CataniaFlorence (Netherlands)Frascati ScienzaMarconi UniversityLaboratori Guglielmo Marconi (Italy)Genoa (Brazil)Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaNaples Anesthesia & Physician AssociatesFermi National Accelerator LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di PaviaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PisaScuola Normale SuperioreIstituto Nazionale di Fisica Nucleare, Sezione di Roma IIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversity of TurinIstituto Nazionale di Fisica Nucleare, Sezione di TriesteGangneung–Wonju National UniversityChonnam National UniversityChonnam National University HospitalHanyang UniversityKyung Hee UniversitySejong UniversityUniversity of SeoulYonsei UniversitySungkyunkwan UniversityKuwait UniversityRiga High Tech UniversityVilnius UniversityVilnius University of Applied SciencesMalayan Colleges LagunaUniversity of MalayaUniversitas MalahayatiUniversidad de SonoraCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalSecretaría de Ciencia, Humanidades, Tecnología e InnovaciónIbero American UniversityUniversidad IberoamericanaUniversidad de PueblaUniversity of MontenegroCanterbury CollegeQuaid-i-Azam UniversityAGH University of KrakowNational Centre for Nuclear ResearchUniversity of WarsawWarsaw University of TechnologyTechin (Poland)LIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversity of BelgradeGrade Medical (Czechia)Ipca Laboratories (India)Vienna Institute for Nature Conservation & AnalysesUnidades Centrales Científico-TécnicasCentro de Investigaciones Energéticas, Medioambientales y TecnológicasUniversidad Autónoma de MadridUniversidad de OviedoInstituto de Física de CantabriaUniversity of ColomboUniversity of RuhunaETH ZurichStefan Meyer Institute for Subatomic PhysicsNational Central UniversityLaboratoire d’Annecy de Physique des ParticulesNational Taiwan UniversityChulalongkorn UniversityTunis El Manar UniversityCukurova UniversityAdıyaman UniversityMiddle East Technical UniversityBoğaziçi UniversityMarmara UniversityKafkas UniversityIstanbul Technical UniversityHacettepe UniversityErzincan Binali Yıldırım UniversityYıldız Technical UniversityInstitute for Scintillation MaterialsAt BristolUniversity of BristolBristol HospitalSaint Thomas - Rutherford HospitalUniversity of SouthamptonBrunel University of LondonUniversidad de AméricaUniversity of AlabamaUniversity of West AlabamaBoston UniversityBrown UniversityBethel CollegeBethel UniversityShorter CollegeBethel UniversityKaramanoğlu Mehmetbey UniversityUniversity of California, DavisUniversity of California, RiversideUniversity of California San DiegoUniversity of California, Santa BarbaraCalifornia Institute of TechnologyCarnegie Mellon UniversityUniversity of Colorado SystemCornell UniversityUnited States Naval AcademyFlorida Department of StateFlorida Institute of TechnologyUniversity of ChicagoBingöl UniversitySinop UniversityJohns Hopkins UniversityJohns Hopkins University School of Advanced International StudiesUniversity of KansasHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringUniversity of Minnesota SystemUniversity of Nebraska–LincolnUniversity of Nebraska SystemBuffalo State UniversityUniversity at Buffalo, State University of New YorkNorthwestern UniversityNotre Dame of Dadiangas UniversityState Library of OhioUniversity of Puerto Rico-MayaguezPurdue University NorthwestRice UniversityUniversity of RochesterRutgers, The State University of New JerseyRutgers Sexual and Reproductive Health and RightsUniversity of Tennessee SystemTexas A&M University at QatarTexas Tech UniversityVanderbilt HealthUrology of VirginiaWayne State CollegeUniversity of Wisconsin System
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Les sujets associés
High-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studies