Search for the doubly charmed baryon ■
搜索为二倍地 charmed baryon $$\Xi_{ cc }^+$$cc+作者机构：Centro Brasileiro de Pesquisas Fisicas(CBPF)Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ)Rio de JaneiroBrazil Center for High Energy PhysicsTsinghua UniversityBeijingChina School of Physics State Key Laboratory of Nuclear Physics and TechnologyPeking UniversityBeijingChina University of Chinese Academy of SciencesBeijingChina Institute Of High Energy Physics(IHEP)BeijingChina Institute of Particle PhysicsCentral China Normal UniversityWuhanHubeiChina Univ.Grenoble AlpesUniv.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Clermont AuvergneCNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille UnivCNRS/IN2P3CPPMMarseilleFrance LALUniv.Paris-SudCNRS/IN2P3Universite Paris-SaclayOrsayFrance LPNHESorbonne Universite Paris Diderot Sorbonne Paris Cite CNRS/IN2P3ParisFrance I.Physikalisches InstitutRWTH Aachen UniversityAachenGermany Fakultat PhysikTechnische Universitat DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK)HeidelbergGermany Physikalisches InstitutRuprecht-Karls-Universitat HeidelbergHeidelbergGermany School of PhysicsUniversity College DublinDublinIreland INFN Sezione di BariBariItaly INFN Sezione di BolognaBolognaItaly INFN Sezione di FerraraFerraraItaly INFN Sezione di FirenzeFirenzeItaly INFN Laboratori Nazionali di FrascatiFrascatiItaly INFN Sezione di GenovaGenovaItaly INFN Sezione di Milano-BicoccaMilanoItaly INFN Sezione di MilanoMilanoItaly INFN Sezione di CagliariMonserratoItaly INFN Sezione di PadovaPadovaItaly INFN Sezione di PisaPisaItaly INFN Sezione di Roma Tor VergataRomaItaly INFN Sezione di Roma La SapienzaRomaItaly Nikhef National Institute for Subatomic PhysicsAmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University AmsterdamAmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of SciencesKrakowPoland AGH-University of Science and TechnologyFaculty of Physics and Applied Computer ScienceKrakowPoland National Center for Nuclear Research(NCBJ)WarsawPoland Horia Hulubei National Institute of Physics and Nuclear EngineeringBucharest-MagureleRomania Petersburg Nuclear Physics Institute NRC Kurchatov Institute(PNPI NRC KI)GatchinaRussia Institute of Theoretical and Experimental Physics NRC Kurchatov Institute(ITEP NRC KI)MoscowRussiaMoscowRussia Institute of Nuclear PhysicsMoscow State University(SINP MSU)MoscowRussia Institute for Nuclear Research of the Russian Academy of Sciences(INR RAS)MoscowRussia Yandex School of Data AnalysisMoscowRussia Budker Institute of Nuclear Physics(SB RAS)NovosibirskRussia Institute for High Energy Physics NRC Kurchatov Institute(IHEP NRC KI)ProtvinoRussiaProtvinoRussia ICCUBUniversitat de BarcelonaBarcelonaSpain Instituto Galego de Fisica de Altas Enerxias(IGFAE)Universidade de Santiago de CompostelaSantiago de CompostelaSpain Instituto de Fisica CorpuscularCentro Mixto Universidad de Valencia-CSICValenciaSpain European Organization for Nuclear Research(CERN)GenevaSwitzerland Institute of PhysicsEcole Polytechnique Fédérale de Lausanne(EPFL)LausanneSwitzerland Physik-InstitutUniversitat ZürichZürichSwitzerland NSC Kharkiv Institute of Physics and Technology(NSC KIPT)KharkivUkraine Institute for Nuclear Research of the National Academy of Sciences(KINR)KyivUkraine University of BirminghamBirminghamUnited Kingdom Wills Physics LaboratoryUniversity of BristolBristolUnited Kingdom Cavendish LaboratoryUniversity of CambridgeCambridgeUnited Kingdom Department of PhysicsUniversity of WarwickCoventryUnited Kingdom STFC Rutherford Appleton LaboratoryDidcotUnited Kingdom School of Physics and AstronomyUniversity of EdinburghEdinburghUnited Kingdom School of Physics and AstronomyUniversity of GlasgowGlasgowUnited Kingdom Oliver Lodge LaboratoryUniversity of LiverpoolLiverpoolUnited Kingdom Imperial College LondonLondonUnited Kingdom Department of Physics and AstronomyUniversity of ManchesterManchesterUnited Kingdom Department of PhysicsUniversity of OxfordOxfordUnited Kingdom Massachusetts Institute of TechnologyCambridgeMAUnited States University of CincinnatiCincinnatiOHUnited States University of MarylandCollege ParkMDUnited States Los Alamos National Laboratory(LANL)Los AlamosUnited States Syracuse UniversitySyracuseNYUnited States Laboratory of Mathematical and Subatomic PhysicsConstantineAlgeria Pontificia Universidade Catolica do Rio de Janeiro(PUC-Rio)Rio de JaneiroBrazil South China Normal UniversityGuangzhouChina Center for High Energy PhysicsTsinghua UniversityBeijingChina School of Physics and TechnologyWuhan UniversityWuhanChina Departamento de FisicaUniversidad Nacional de ColombiaBogotaColombia Institut für PhysikUniversitat RostockRostockGermany Van Swinderen InstituteUniversity of GroningenGroningenNetherlands National Research Centre Kurchatov InstituteMoscowRussia National University of Science and Technology“MISIS”MoscowRussia National Research University Higher School of EconomicsMoscowRussia National Research Tomsk Polytechnic UniversityTomskRussia University of MichiganAnn ArborUnited States Universidade Federal do Triangulo Mineiro(UFTM)Uberaba-MGBrazil Laboratoire Leprince-RinguetPalaiseauFrance P.N.Lebedev Physical InstituteRussian Academy of Science(LPI RAS)MoscowRussia Universitàdi BariBariItaly Universita di BolognaBolognaItaly Universita di CagliariCagliariItaly Universita di FerraraFerraraItaly Universita di GenovaGenovaItaly Universita di Milano BicoccaMilanoItaly Universita di Roma Tor VergataRomaItaly Universita di Roma La SapienzaRomaItaly AGH-University of Science and TechnologyFaculty of Computer ScienceElectronics and TelecommunicationsKrakówPoland LIFAELSLa SalleUniversitat Ramon LlullBarcelonaSpain Hanoi University of ScienceHanoiVietnam Universita di PadovaPadovaItaly Universita di PisaPisaItaly Universita degli Studi di MilanoMilanoItaly Universita di UrbinoUrbinoItaly Universita della BasilicataPotenzaItaly Scuola Normale SuperiorePisaItaly Universita di Modena e Reggio EmiliaModenaItaly Universita di SienaSienaItaly MSU-Iligan Institute of Technology(MSU-IIT)IliganPhilippines Novosibirsk State UniversityNovosibirskRussia Sezione INFN di TriesteTriesteItaly School of Physics and Information TechnologyShaanxi Normal University(SNNU)Xi'anChina Physics and Micro Electronic CollegeHunan UniversityChangsha CityChina Lanzhou UniversityLanzhouChina
出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)
年 卷 期：2020年第63卷第2期
页 面：8-22页
核心收录：
学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学]
基 金：support from CERN and from the national agencies:CAPES,CNPq,FAPERJ and FINEP(Brazil) MOST and NSFC(China) CNRS/IN2P3(France) BMBF,DFG and MPG(Germany) INFN(Italy) KWO(Netherlands) MNiSW and NCN(Poland) MEN/IFA(Romania) MinES and FASO(Russia) MinECo(Spain) SNSF and SER(Switzerland) NASU(Ukraine) STFC(United Kingdom) NSF(USA)
主 题：charmed baryons limits on production of particles charmed quarks experimental tests
摘 要：A search for the doubly charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7,8 and 13 *** data correspond to a total integrated luminosity of 9 fb^-*** significant signal is observed in the mass range from 3.4 to 3.8 GeV/c^*** limits are set at 95%credibility level on the ratio of the ■^+cc production cross-section times the branching fraction to that ofΛ^+c and ■^++cc *** limits are determined as functions of the ■^+cc mass for different lifetime hypotheses,in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c.
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