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Bottom quark energy loss and hadronization with B+ and $$ {\textrm{B}}_{\textrm{s}}^0 $$ nuclear modification factors using pp and PbPb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

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272Institutions déclarées
52Pays d’affiliation déclarés

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A bstract The production cross sections of $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 and B + mesons are reported in proton-proton (pp) collisions recorded by the CMS experiment at the CERN LHC with a center-of-mass energy of 5.02 TeV. The data sample corresponds to an integrated luminosity of 302 pb − 1 . The cross sections are based on measurements of the $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 → J /ψ ( μ + μ − ) ϕ (1020)(K + K − ) and B + → J /ψ ( μ + μ − )K + decay channels. Results are presented in the transverse momentum ( p T ) range 7–50 GeV /c and the rapidity interval | y | < 2 . 4 for the B mesons. The measured p T -differential cross sections of B + and $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 in pp collisions are well described by fixed-order plus next-to-leading logarithm perturbative quantum chromodynamics calculations. Using previous PbPb collision measurements at the same nucleon-nucleon center-of-mass energy, the nuclear modification factors, R AA , of the B mesons are determined. For p T > 10 GeV /c , both mesons are found to be suppressed in PbPb collisions (with R AA values significantly below unity), with less suppression observed for the $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 mesons. In this p T range, the R AA values for the B + mesons are consistent with those for inclusive charged hadrons and D 0 mesons. Below 10 GeV /c , both B + and $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 are found to be less suppressed than either inclusive charged hadrons or D 0 mesons, with the $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 R AA value consistent with unity. The R AA values found for the B + and $$ {\textrm{B}}_{\textrm{s}}^0 $$ B s 0 are compared to theoretical calculations, providing constraints on the mechanism of bottom quark energy loss and hadronization in the quark-gluon plasma, the hot and dense matter created in ultrarelativistic heavy ion collisions.

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Bottom quark energy loss and hadronization with B+ and $$ {\textrm{B}}_{\textrm{s}}^0 $$ nuclear modification factors using pp and PbPb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV
Date Crossref
27/02/2025
Éditeur
Springer Science and Business Media LLC
Type
journal-article

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Alikhanyan National LaboratoryYerevan State UniversityInstitute of High Energy PhysicsIndian Institute of Technology MadrasTU WienUniversity of California, Santa BarbaraUniversity of AntwerpArab Academy for Science, Technology, and Maritime TransportVrije Universiteit BrusselGhent University HospitalUniversité Libre de BruxellesUniversity of Notre DameUCLouvainTata Institute of Fundamental ResearchCentro Brasileiro de Pesquisas FísicasUniversidade do Estado do Rio de JaneiroUniversidade Estadual de Campinas (UNICAMP)Universidade Federal do Rio Grande do SulInstituto de Estudios AvanzadosInstituto Politécnico NacionalUniversidade Federal do ABCBulgarian Academy of SciencesSofia University "St. Kliment Ohridski"University of TarapacáBeihang UniversityTsinghua UniversityUniversity of IowaNanjing Normal UniversityUniversity of Chinese Academy of SciencesPeking UniversityChina Center of Advanced Science and TechnologyChina Spallation Neutron SourceCalifornia Institute of TechnologyUniversity of FloridaEuropean Organization for Nuclear ResearchMassachusetts Institute of TechnologyDeutsches Elektronen-Synchrotron DESYSouth China Normal UniversityKyung Hee UniversityUniversity of Science and Technology of ChinaHenan Normal UniversityFlorida State UniversityFudan UniversityInstitute of Modern PhysicsZhejiang UniversityUniversidad de AntioquiaUniversity of SplitRuđer Bošković InstituteUniversity of CyprusCharles UniversityUniversidad San Francisco de QuitoSuez UniversityBritish University in EgyptAcademy of Scientific Research and TechnologyFayoum UniversityNational 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'UniversPurdue University West LafayetteInstitut Polytechnique de ParisCentre National de la Recherche ScientifiqueUniversité de Haute-AlsaceInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesInstitute of Nuclear Physics of LyonInstitut de Physique des 2 Infinis de LyonIstinye UniversityGeorgian Technical UniversityRWTH Aachen UniversityUniversity of California San DiegoUniversidade do Estado do AmazonasSaha Institute of Nuclear PhysicsWayne State UniversityUniversität HamburgUniversity of WuppertalBrandenburg University of Technology Cottbus-SenftenbergForschungszentrum JülichKyungpook National UniversityNational Central UniversityNational Centre of Scientific Research "Demokritos"Institute of Nuclear and Particle PhysicsNational and Kapodistrian University of AthensNational Technical University of AthensUniversity of IoanninaHUN-REN Wigner Research Centre for PhysicsHUN-REN Institute for Nuclear ResearchBabeș-Bolyai UniversityEötvös Loránd UniversityAssiut UniversityUniversity of DebrecenKároly Róbert University CollegePanjab UniversityPunjab Agricultural UniversityUniversity of DelhiVisva-Bharati UniversityUniversity of Wisconsin–MadisonNational Institute of Science Education and ResearchHomi Bhabha National InstituteIndian Institute of Technology BhubaneswarIndian Institute of Science Education and Research KolkataIndian Institute of Science Education and Research MohaliIndian Institute of Science Education and Research, BhopalUniversity of HyderabadIndian Institute of Science Education and Research BerhampurIndian Institute of Science Education and Research, TirupatiIsfahan University of TechnologySharif University of TechnologyInstitute for Research in Fundamental SciencesUniversity of Science and Technology of MazandaranArak UniversityUniversity College DublinIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroPolytechnic University of BariHelwan UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of 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SienaIbero American UniversityIstituto Nazionale di Fisica Nucleare, Sezione di Roma ISapienza University of RomeIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversity of TurinUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Istituto Nazionale di Fisica Nucleare, Sezione di TriesteUniversity of TriesteSeoul National UniversitySungkyunkwan UniversityTexas Tech UniversitySejong UniversityChonnam National UniversityMitchell InstituteTexas A&M UniversityHanyang UniversityUniversity of Illinois ChicagoUniversity of SeoulYonsei UniversityAmerican University of the Middle EastKuwait UniversityRiga Technical UniversityUniversity of LatviaVilnius UniversityUniversity of MalayaNational University of MalaysiaUniversidad de SonoraCatholic University of AmericaBenemérita Universidad Autónoma de PueblaUniversity of MontenegroUniversity of CanterburyQuaid-i-Azam UniversityAGH University of KrakowNational Centre for Nuclear ResearchUniversity of WarsawWarsaw University of TechnologyLIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversity of BelgradeCentro de Investigaciones Energéticas, Medioambientales y TecnológicasUniversity of AlabamaETH ZurichInstitute of Particle PhysicsUniversidad Autónoma de MadridUniversidad de OviedoUniversidad de CantabriaEastern University, Sri LankaUniversity of ColomboUniversity of RuhunaÉcole Polytechnique Fédérale de LausanneUniversity of ZurichPaul Scherrer InstituteStefan Meyer Institute for Subatomic PhysicsLaboratoire d’Annecy de Physique des ParticulesInstitut National de Physique Nucléaire et de Physique des ParticulesNational Taiwan UniversityChulalongkorn UniversityCukurova UniversityNear East UniversityKonya Technical UniversityIzmir UniversityBakırçay ÜniversitesiAdıyaman UniversityMiddle East Technical UniversityYozgat Bozok ÜniversitesiBoğaziçi UniversityMarmara UniversityMilli Savunma ÜniversitesiKafkas UniversityIstanbul Technical UniversityOkan UniversityHacettepe UniversityErzincan Binali Yıldırım UniversityIstanbul UniversityIstanbul University-CerrahpaşaYıldız Technical UniversityInstitute for Scintillation MaterialsKharkiv Institute of Physics and TechnologyUniversity of BristolRutherford Appleton LaboratoryUniversity of SouthamptonImperial Valley CollegeDurham UniversityMonash UniversityBrunel University of LondonBaylor UniversityBrown UniversityShorter CollegeKaramanoğlu Mehmetbey UniversityUniversity of California, DavisUniversity of California SystemUniversity of California, RiversideCarnegie Mellon UniversityUniversity of Colorado BoulderUniversity of Colorado SystemCornell UniversityUnited States Naval AcademyFlorida Institute of TechnologyAin Shams UniversityBingöl UniversitySinop UniversityErciyes UniversityJohns Hopkins UniversityUniversity of KansasHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicKansas State UniversityUniversity of Maryland, College ParkVanderbilt UniversityUniversity of Minnesota SystemUniversity of Nebraska–LincolnUniversity at Buffalo, State University of New YorkUniversidad del NoresteThe Ohio State UniversityPrinceton UniversityUniversity of Puerto Rico SystemPurdue University NorthwestRice UniversityUniversity of RochesterRutgers, The State University of New JerseyUniversity of Tennessee at KnoxvilleTexas A&M University at QatarUniversity of VirginiaAcademy of Sciences Republic of Uzbekistan

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Sujets associés

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

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