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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/24193
Title: 
Search for heavy Majorana neutrinos in mu(+/-)mu(+/-) + jets and e(+/-)e(+/-) + jets events in pp collisions at root s=7 TeV
Author(s): 
Institution: 
  • CERN
  • Yerevan Phys Inst
  • Inst Hochenergiephys OeAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Brussels
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Bulgarian Acad Sci
  • Univ Sofia
  • Inst High Energy Phys
  • Peking Univ
  • Universidad de los Andes
  • Tech Univ Split
  • 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 Haute Alsace Mulhouse
  • CNRS
  • Univ Lyon 1
  • Tbilisi State Univ
  • RWTH Aachen University
  • DESY
  • Univ Hamburg
  • Univ Karlsruhe
  • Inst Nucl Phys Demokritos
  • Univ Athens
  • Univ Ioannina
  • KFKI Res Inst Particle & Nucl Phys
  • Inst Nucl Res ATOMKI
  • Debrecen Univ Med
  • Panjab Univ
  • University of Delhi
  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
  • Tata Inst Fundamental Res EHEP
  • Tata Inst Fundamental Res HECR
  • Inst Res Fundamental Sci IPM
  • Ist Nazl Fis Nucl
  • Univ Bari
  • Politecn Bari
  • Univ Bologna
  • Univ Catania
  • Univ Florence
  • Univ Milano Bicocca
  • Univ Naples Federico II
  • Univ Padua
  • Univ Trento Trento
  • Univ Pavia
  • Univ Perugia
  • Univ Pisa
  • Scuola Normale Super Pisa
  • Univ Roma La Sapienza
  • Univ Turin
  • Univ Piemonte Orientale Novara
  • Univ Trieste
  • Kangwon Natl Univ
  • Kyungpook Natl Univ
  • Chonnam Natl Univ
  • Korea University
  • Univ Seoul
  • Sungkyunkwan Univ
  • Vilnius State Univ
  • IPN
  • Univ Iberoamer
  • Benemerita Univ Autonoma Puebla
  • Univ Autanoma San Luis Potosi
  • Univ Auckland
  • Univ Canterbury
  • Quaid I Azam Univ
  • Univ Warsaw
  • Soltan Inst Nucl Studies
  • Lab Instrumentacao Fis Expt Particulas
  • Joint Inst Nucl Res
  • Petersburg Nucl Phys Inst
  • Russian Acad Sci
  • Institute for Theoretical and Experimental Physics (ITEP)
  • Moscow MV Lomonosov State Univ
  • PN Lebedev Phys Inst
  • University of Belgrade
  • CIEMAT
  • Univ Autonoma Madrid
  • Univ Oviedo
  • Univ Cantabria
  • Paul Scherrer Inst
  • ETH
  • Univ Zurich
  • Natl Cent Univ
  • Natl Taiwan Univ
  • Chulalongkorn Univ
  • Cukurova Univ
  • Middle E Tech Univ
  • Bogazici Univ
  • Istanbul Tech Univ
  • Kharkov Inst Phys & Technol
  • Univ Bristol
  • Rutherford Appleton Lab
  • Univ London Imperial Coll Sci Technol & Med
  • Brunel Univ
  • Baylor Univ
  • Univ Alabama
  • Boston University
  • Brown University
  • Univ Calif Davis
  • Univ Calif Los Angeles
  • University of California, Riverside (UCR)
  • Univ Calif San Diego
  • Univ Calif Santa Barbara
  • CALTECH
  • Carnegie Mellon Univ
  • Univ Colorado
  • Cornell Univ
  • Fairfield Univ
  • Fermilab Natl Accelerator Lab
  • Univ Florida
  • Florida Int Univ
  • Florida State University
  • Florida Inst Technol
  • Univ Illinois
  • Univ Iowa
  • Johns Hopkins Univ
  • University of Kansas (KU)
  • Kansas State University
  • Lawrence Livermore Natl Lab
  • University of Maryland
  • MIT
  • Univ Minnesota
  • University of Mississippi
  • Univ Nebraska
  • SUNY Buffalo
  • Northeastern University
  • Northwestern University (NU)
  • Univ Notre Dame
  • Ohio State Univ
  • Princeton University
  • Univ Puerto Rico
  • Purdue Univ
  • Purdue University Calumet
  • Rice University
  • University of Rochester
  • Rockefeller Univ
  • Rutgers State Univ
  • Univ Tennessee
  • Texas A&M Univ
  • Texas Tech Univ
  • Vanderbilt Univ
  • University of Virginia (UVA)
  • Wayne State Univ
  • Univ Wisconsin
  • Vienna Univ Technol
  • Universidade Federal do ABC (UFABC)
  • Univ Bucharest
ISSN: 
0370-2693
Sponsorship: 
  • FMSR (Austria)
  • Fonds de la Recherche Scientifique (FNRS)
  • 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)
  • Organisation Européenne pour la Recherche Nucléaire (CERN)
  • Chinese Academy of Sciences (CAS)
  • MoST (China)
  • National Natural Science Foundation of China (NSFC)
  • COLCIENCIAS (Colombia)
  • MSES (Croatia)
  • Research Promotion Foundation (RPF)
  • MoER (Estonia)
  • European Regional Development Fund (ERDF)
  • Academy of Finland
  • MEC (Finland)
  • Helsinki Institute of Physics (HIP)
  • Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
  • Institut national de physique nucléaire et de physique des particules (IN2P3/CNRS)
  • Bundesministerium für Bildung und Forschung (BMBF)
  • Deutsche Forschungsgemeinschaft (DFG)
  • HGF (Germany)
  • General Secretariat for Research and Technology (GSRT)
  • Hungarian Scientific Research Fund (OTKA)
  • NKTH (Hungary)
  • Department of Atomic Energy (DAE) - India
  • Department of Science and Technology (DST) - India
  • Institute for Research in Fundamental Sciences (IPM)
  • Science Foundation Ireland (SFI)
  • Istituto Nazionale di Fisica Nucleare (INFN)
  • National Research Foundation of Korea (NRF)
  • WCU (Korea)
  • LAS (Lithuania)
  • Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)
  • Consejo Nacional de Ciencia y Tecnología (CONACYT)
  • SEP (Mexico)
  • UASLP-FAI (Mexico)
  • MSI (New Zealand)
  • Pakistan Atomic Energy Commission (PAEC)
  • MSHE (Poland)
  • NSC (Poland)
  • Fundação para a Ciência e a Tecnologia (FCT)
  • Joint Institute for Nuclear Research (JINR)
  • MON (Russia)
  • Rosatom State Atomic Energy Corporation (ROSATOM)
  • RAS (Russia)
  • Russian Foundation for Basic Research (RFBR)
  • Ministry of Science and Technological Development (MSTD) - Serbia
  • SEIDI (Spain)
  • Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
  • Swiss Funding Agencies (Switzerland)
  • NSC (Taipei)
  • Scientific and Technological Research Council of Turkey (TUBITAK)
  • Türkiye Atom Enerjisi Kurumu (TAEK)
  • Science and Technology Facilities Council (STFC)
  • DOE (USA)
  • National Science Foundation (NSF) - USA
Sponsorship Process Number: 
SF0690030s09
Abstract: 
A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of 4.98 fb(-1) of pp collisions at a centre-of-mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, vertical bar V-lN vertical bar(2), for l = e. mu, as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorananeutrino mixing for m(N) > 90 GeV. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Issue Date: 
22-Oct-2012
Citation: 
Physics Letters B. Amsterdam: Elsevier B.V., v. 717, n. 1-3, p. 109-128, 2012.
Time Duration: 
109-128
Publisher: 
Elsevier B.V.
Keywords: 
  • CMS
  • Physics
  • Heavy neutrino
Source: 
http://dx.doi.org/10.1016/j.physletb.2012.09.012
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/24193
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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