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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/111341
Title: 
Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at root s=8 TeV
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • CERN
  • 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)
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ISSN: 
0370-2693
Sponsorship: 
  • BMWF
  • FWF
  • FNRS
  • FWO
  • 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
  • CERN
  • CAS
  • MoST
  • NSFC
  • COLCIENCIAS
  • MSES
  • RPF
  • MoER
  • ERDF
  • Academy of Finland
  • MEC
  • HIP
Sponsorship Process Number: 
MoERSF0690030s09
Abstract: 
A search is performed for a massive new vector-like quark T, with charge 2/3, that is pair produced together with its antiparticle in proton-proton collisions. The data were collected by the CMS experiment at the Large Hadron Collider in 2012 at root s = 8 TeV and correspond to an integrated luminosity of 19.5 fb(-1). The T quark is assumed to decay into three different final states, bW, tZ, and tH. The search is carried out using events with at least one isolated lepton. No deviations from standard model expectations are observed, and lower limits are set on the T quark mass at 95% confidence level. The lower limit lies between 687 and 782 GeV for all possible values of the branching fractions into the three different final states assuming strong production. These limits are the most stringent constraints to date on the existence of such a quark. (C) Published by Elsevier B.V.
Issue Date: 
5-Feb-2014
Citation: 
Physics Letters B. Amsterdam: Elsevier Science Bv, v. 729, p. 149-171, 2014.
Time Duration: 
149-171
Publisher: 
Elsevier B.V.
Keywords: 
  • CMS
  • Physics
Source: 
http://dx.doi.org/10.1016/j.physletb.2014.01.006
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/111341
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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