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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/128949
Title: 
Search for a standard model-like Higgs boson in the mu(+)mu(-) and e(+)e(-) decay channels at the LHC
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • OeAW
  • Natl Ctr Particle &High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Bruxelles
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Ctr Brasileiro Pesquisas Fis
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Inst Nucl Energy Res
  • Univ Sofia
  • Inst High Energy Phys
  • Peking Univ
  • Univ Los Andes
  • Univ Split
  • Rudjer Boskovic Inst
  • 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
  • Inst Natl Phys Nucl &Phys Particules
  • Univ Lyon 1
  • Tbilisi State Univ
  • Rhein Westfal TH Aachen
  • DESY
  • Univ Hamburg
  • Univ Karlsruhe
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  • Univ Ioannina
  • Wigner Res Ctr Phys
  • Inst Nucl Res ATOMKI
  • Univ Debrecen
  • Natl Inst Sci Educ &Res
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  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
  • Tata Inst Fundamental Res
  • Inst Res Fundamental Sci IPM
  • Univ Coll Dublin
  • INFN Sez Bari
  • Univ Bari
  • Politecn Bari
  • INFN Sez Bologna
  • Univ Bologna
  • INFN Sez Catania
  • Univ Catania
  • INFN Sez Firenze
  • Univ Florence
  • Ist Nazl Fis Nucl
  • INFN Sez Genova
  • Univ Genoa
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  • Univ Milano Bicocca
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  • Univ Naples Federico II
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  • Univ Padua
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  • Natl Ctr Nucl Res
  • Univ Warsaw
  • Lab Instrumentacao &Fis Expt Particulas
  • Joint Inst Nucl Res
  • Petersburg Nucl Phys Inst
  • Russian Acad Sci
  • Inst Theoret &Expt Phys
  • PN Lebedev Phys Inst
  • Moscow MV Lomonosov State Univ
  • State Res Ctr Russian Federat
  • Univ Belgrade
  • Vinca Inst Nucl Sci
  • CIEMAT
  • Univ Autonoma Madrid
  • Univ Oviedo
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  • CERN
  • Paul Scherrer Inst
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  • Middle E Tech Univ
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  • Eotvos Lorand Univ
  • Visva Bharati Univ
  • King Abdulaziz Univ
  • Univ Ruhuna
  • Isfahan Univ Technol
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  • Univ Michoacana
  • St Petersburg State Polytech Univ
  • Scuola Normale
  • Sezione Ist Nazl Fis Nucl
  • Albert Einstein Ctr Fundamental Phys
  • Gaziosmanpasa Univ
  • Adiyaman Univ
  • Cag Univ
  • Anadolu Univ
  • Izmir Inst Technol
  • Necmettin Erbakan Univ
  • Ozyegin Univ
  • Marmara Univ
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  • Univ Southampton
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  • Argonne Natl Lab
  • Erzincan Univ
  • Yildiz Tekn Univ
  • Texas A&M Univ Qatar
ISSN: 
0370-2693
Sponsorship: 
  • BMWFW (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
  • CAS (China)
  • MoST (China)
  • NSFC (China)
  • COLCIENCIAS (Colombia)
  • MSES (Croatia)
  • CSF (Croatia)
  • RPF (Cyprus)
  • MoER (Estonia)
  • ERC IUT (Estonia)
  • ERDF (Estonia)
  • Academy of Finland (Finland)
  • MEC (Finland)
  • HIP (Finland)
  • CEA (France)
  • CNRS/IN2P3 (France)
  • BMBF (Germany)
  • DFG (Germany)
  • HGF (Germany)
  • GSRT (Greece)
  • OTKA (Hungary)
  • NIH (Hungary)
  • DAE (India)
  • DST (India)
  • IPM (Iran)
  • SFI (Ireland)
  • INFN (Italy)
  • NRF (Republic of Korea)
  • WCU (Republic of Korea)
  • LAS (Lithuania)
  • MOE (Malaysia)
  • UM (Malaysia)
  • CINVESTAV (Mexico)
  • CONACYT (Mexico)
  • SEP (Mexico)
  • UASLP-FAI (Mexico)
  • MBIE (New Zealand)
  • PAEC (Russia)
  • RFBR (Russia)
  • MESTD (Serbia)
  • SEIDI (Spain)
  • CPAN (Spain)
  • Swiss Funding Agencies (Switzerland)
  • MST (Taipei)
  • ThEPCenter (Thailand)
  • IPST (Thailand)
  • STAR (Thailand)
  • NSTDA (Thailand)
  • TUBITAK (Turkey)
  • TAEK (Turkey)
  • NASU (Ukraine)
  • SFFR (Ukraine)
  • STFC (United Kingdom)
  • DOE (USA)
  • NSF (USA)
  • Marie-Curie programme
  • European Research Council
  • EPLANET (European Union)
  • Leventis Foundation
  • A.P. Sloan Foundation
  • Alexander von Humboldt Foundation
  • Belgian Federal Science Policy Office
  • Fonds pour la Formation a 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 the Czech Republic
  • Council of Science and Industrial Research, India
  • HOMING PLUS programme of Foundation for Polish Science
  • European Union, Regional Development Fund
  • Compagnia di San Paolo (Torino)
  • Consorzio per la Fisica (Trieste)
  • MIUR project (Italy)
  • Thalis programme
  • Aristeia programme
  • EU-ESF
  • Greek NSRF
  • National Priorities Research Program by Qatar National Research Fund
  • Russian Scientific Fund
Sponsorship Process Number: 
  • MIUR project (Italy): 20108T4XTM
  • Russian Scientific Fund: 14-12-00110
Abstract: 
A search is presented for a standard model-like Higgs boson decaying to the mu(+)mu(-) or e(+)e(-) final states based on proton-proton collisions recorded by the CMS experiment at the CERN LHC. The data correspond to integrated luminosities of 5.0 fb(-1) at a centre-of-mass energy of 7 TeV and 19.7 fb(-1) at 8 TeV for the mu(+)mu(-) search, and of 19.7 fb(-1) at 8 TeV for the e(+)e(-) search. Upper limits on the production cross section times branching fraction at the 95% confidence level are reported for Higgs boson masses in the range from 120 to 150 GeV. For a Higgs boson with a mass of 125 GeV decaying to mu(+)mu(-), the observed (expected) upper limit on the production rate is found to be 7.4 (6.5(-1.9)(+2.8)) times the standard model value. This corresponds to an upper limit on the branching fraction of 0.0016. Similarly, for e(+)e(-), an upper limit of 0.0019 is placed on the branching fraction, which is approximate to 3.7 x 10(5) times the standard model value. These results, together with recent evidence of the 125 GeV boson coupling to tau-leptons with a larger branching fraction consistent with the standard model, confirm that the leptonic couplings of the new boson are not flavour-universal. (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
Issue Date: 
11-May-2015
Citation: 
Physics Letters B, v. 744, p. 184-207, 2015.
Time Duration: 
184-207
Publisher: 
Elsevier B.V.
Keywords: 
  • CMS
  • Physics
  • Higgs
  • Lepton
  • Muon
  • Electron
  • Dilepton
  • Dimuon
  • Dielectron
  • Higgs boson
Source: 
http://www.sciencedirect.com/science/article/pii/S0370269315002117
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/128949
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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