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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/24338
Title: 
Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state
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 IN2P3
  • 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 EHER
  • Tata Inst Fundamental Res HECR
  • Inst Res Fundamental Sci IPM
  • Univ Bari
  • Univ Bologna
  • Univ Catania
  • Univ Florence
  • INFN Lab Nazl Frascati
  • Univ Genoa
  • Univ Milano Bicocca
  • Univ Naples Federico II
  • Univ Padua
  • Univ Pavia
  • Univ Perugia
  • Univ Pisa
  • Univ Roma La Sapienza
  • INFN Sez Torino
  • 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 Autonoma San Luis Potosi
  • Univ Auckland
  • Univ Canterbury
  • Quaid I Azam Univ
  • Natl Ctr Nucl Res
  • Univ Warsaw
  • Lab Instrumentacdo 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
  • Vinca Inst Nucl Sci
  • Ctr Invest Energet Medioambientales & Tecnol CIEM
  • Univ Autonoma Madrid
  • Univ Oviedo
  • Univ Cantabria
  • Paul Scherrer Inst
  • ETH
  • Univ Zurich
  • Natl Cent Univ
  • Natl Taiwan Univ
  • Chulalongkom 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
  • Cornell Univ
  • Fairfield Univ
  • Univ Florida
  • Florida Int Univ
  • Florida State University
  • Florida Inst Technol
  • Univ Illinois Chicago UIC
  • 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)
  • Suez Canal Univ
  • Zewail City Sci & Technol
  • Cairo Univ
  • Fayoum Univ
  • British Univ
  • Ain Shams Univ
  • Univ Haute Alsace
  • Brandenburg Tech Univ Cottbus
  • Eotvos Lorand Univ
  • Visva Bharati Univ
  • Sharif Univ Technol
  • Shiraz Univ
  • Islamic Azad Univ
  • Univ Rome
  • Univ Basilicata
  • Univ Siena
  • Scuola Normale Sez INFN
  • Albert Einstein Ctr Fundamental Phys
  • Gaziosmanpasa Univ
  • Adiyaman Univ
  • Izmir Inst Technol
  • Mersin Univ
  • Kafkas Univ
  • Univ Southampton
  • Univ Sydney
  • Utah Valley Univ
  • Univ Edinburgh
  • Argonne Natl Lab
  • Mimar Sinan Univ
  • 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)
  • NRF (Republic of Korea)
  • WCU (Republic of 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
  • MICINN (Spain)
  • Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
  • NSC (Taipei)
  • Scientific and Technological Research Council of Turkey (TUBITAK)
  • Türkiye Atom Enerjisi Kurumu (TAEK)
  • Science and Technology Facilities Council (STFC)
  • Department of Energy (DOE)
  • National Science Foundation (NSF) - USA
  • Swiss Funding Agencies (Switzerland)
Sponsorship Process Number: 
MoER: SF0690030s09
Abstract: 
The results of a search for the pair production of a fourth-generation up-type quark (t') in proton-proton collisions at root s = 7 TeV are presented, using data corresponding to an integrated luminosity of about 5.0 fb(-1) collected by the Compact Muon Solenoid experiment at the LHC. The t' quark is assumed to decay exclusively to a W boson and a b quark. Events with a single isolated electron or muon, missing transverse momentum, and at least four hadronic jets, of which at least one must be identified as a b jet, are selected. No significant excess of events over standard model expectations is observed. Upper limits for the t'(t) over bar' production cross section at 95% confidence level are set as a function of t' mass, and t'-quark production for masses below 570 GeV is excluded. The search is equally sensitive to nonchiral heavy quarks decaying to Wb. In this case, the results can be interpreted as upper limits on the production cross section times the branching fraction to Wb. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Issue Date: 
5-Dec-2012
Citation: 
Physics Letters B. Amsterdam: Elsevier B.V., v. 718, n. 2, p. 307-328, 2012.
Time Duration: 
307-328
Publisher: 
Elsevier B.V.
Keywords: 
  • CMS
  • Physics
Source: 
http://dx.doi.org/10.1016/j.physletb.2012.10.038
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/24338
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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