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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/116696
Title: 
Observation of a peaking structure in the J/psi phi mass spectrum from B-+/- -> J/psi phi K-+/- decays
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • CERN
  • Inst Hochenergiephys OeAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Bruxelles
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Ctr Brasilerio Pesquisas Fis
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Bulgarian Acad Sci
  • Univ Sofia
  • Inst High Energy Phys
  • Peking Univ
  • Univ Los Andes
  • Tech Univ Split
  • Univ Split
  • Inst Rudjer Boskov
  • Univ Cyprus
  • Charles Univ Prague
  • Acad Sci Res & Technol Arab Republ Egypt
  • NICPB
  • Univ Helsinki
  • Helsinki Inst Phys
  • Lappeenranta Univ Technol
  • CEA Saclay
  • Ecole Polytech
  • Univ Strasbourg
  • CNRS IN2P3
  • Univ Lyon 1
  • Tbilisi State Univ
  • Rhein Westfal TH Aachen
  • Deutsch Elek Synchrotron
  • Univ Hamburg
  • Univ Karlsruhe
  • NCSR Demokritos
  • Univ Athens
  • Univ Ioannina
  • KFKI Res Inst Particle & Nucl Phys
  • Inst Nucl Res ATOMKI
  • Univ Debrecen
  • Natl Inst Sci Educ & Res
  • Panjab Univ
  • Univ Delhi
  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
  • EHEP
  • HECR
  • Inst Res Fundamental Sci IPM
  • Univ Coll Dublin
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  • Lab Instrumentacao & Fis Expt Particulas
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  • Russian Acad Sci
  • Inst Theoret & Expt Phys
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  • Lomonosov Moscow State Univ
  • State Res Ctr Russian Federat
  • Univ Belgrade
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  • Swiss Fed Inst Technol
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  • Rutherford Appleton Lab
  • Univ London Imperial Coll Sci Technol & Med
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  • Tata Inst Fundamental Res HECR
  • King Abdulaziz Univ
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  • Inst Nucl Res
  • Vinca Inst Nucl Sci
  • Argonne Natl Lab
  • Erzincan Univ
  • Yildiz Tekn Univ
ISSN: 
0370-2693
Sponsorship: 
  • BMWF (Austria)
  • FWF (Austria)
  • FNRS (Belgium)
  • FWO (Belgium)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
  • Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • MES (Bulgaria)
  • CERN (China)
  • CAS (China)
  • MoST (China)
  • NSFC (China)
  • COLCIENCIAS (Colombia)
  • MSES (Croatia)
  • RPF (Cyprus)
  • MoER (Estonia)
  • ERDF (Estonia)
  • Academy of Finland (Finland)
  • MEC (Finland)
  • HIP (Finland)
  • CEA (France)
  • BMBF (Germany)
  • DFG (Germany)
  • HGF (Germany)
  • GSRT (Greece)
  • OTKA (Hungary)
  • NKTH (Hungary)
  • DAE (India)
  • DST (India)
  • IPM (Iran)
  • SFI (Ireland)
  • INFN (Italy)
  • NRF (Republic of Korea)
  • WCU (Republic of Korea)
  • LAS (Lithuania)
  • CINVESTAV (Mexico)
  • CONACYT (Mexico)
  • SEP (Mexico)
  • UASLP-FAI (Mexico)
  • MBIE (New Zealand)
  • PAEC (Pakistan)
  • MSHE (Poland)
  • NSC (Poland)
  • FCT (Portugal)
  • JINR (Dubna)
  • MON (Russia)
  • RosAtom (Russia)
  • RAS (Russia)
  • RFBR (Russia)
  • MESTD (Serbia)
  • SEIDI (Spain)
  • CPAN (Spain)
  • Swiss Funding Agencies (Switzerland)
  • NSC (Taipei)
  • ThEPCenter (Thailand)
  • IPST (Thailand)
  • STAR (Thailand)
  • NSTDA (Thailand)
  • TUBITAK (Turkey)
  • TAEK (Turkey)
  • NASU (Ukraine)
  • STFC (United Kingdom)
  • DOE (USA)
  • NSF (USA)
  • Marie-Curie programme
  • European Research Council (European Union)
  • EPLANET (European Union)
  • Leventis Foundation
  • A.P. Sloan Foundation
  • Alexander von Humboldt Foundation
  • Belgian Federal Science Policy Office
  • Fonds pour la Formation la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
  • Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
  • Ministry of Education Youth and Sports (MEYS) of Czech Republic
  • Council of Science and Industrial Research, India
  • Compagnia di San Paolo (Torino)
  • HOMING PLUS programme of Foundation For Polish Science - EU, Regional Development Fund
  • EU-ESF
  • Greek NSRF
Sponsorship Process Number: 
  • MoER (Estonia)SF0690030s09
  • CEA (France)CNRS/IN2P3
Abstract: 
A peaking structure in the J/psi phi mass spectrum near threshold is observed in B-+/- -> J/psi phi K-+/- decays, produced in pp collisions at root s = 7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/psi, corresponds to an integrated luminosity of 5.2 fb(-1). Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 +/- 2.4 (stat.) +/- 6.3 (syst.) MeV and Gamma = 28(-11)(+15) (stat.) +/- 19 (syst.) MeV, respectively. Evidence for an additional peaking structure at higher J/psi phi mass is also reported. (C) 2014 The Authors. Published by Elsevier B.V.
Issue Date: 
27-Jun-2014
Citation: 
Physics Letters B. Amsterdam: Elsevier Science Bv, v. 734, p. 261-281, 2014.
Time Duration: 
261-281
Publisher: 
Elsevier B.V.
Source: 
http://dx.doi.org/10.1016/j.physletb.2014.05.055
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/116696
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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