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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/111358
Title: 
Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • Inst Hochenergiephys OeAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Brussels
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  • Catholic Univ Louvain
  • Univ Mons
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
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  • Inst High Energy Phys
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  • Sezione Ist Nazl Fis Nucl
  • Albert Einstein Ctr Fundamental Phys
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  • Cag Univ
  • Mersin Univ
  • Izmir Inst Technol
  • Ozyegin Univ
  • Kafkas Univ
  • Istanbul Univ
  • Mimar Sinan Univ
  • Kahramanmaras Sutcu Imam Univ
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  • Argonne Natl Lab
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ISSN: 
1029-8479
Abstract: 
A search for a standard model Higgs boson decaying into a pair of tau leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 fb(-1) at a centre-of-mass energy of 7 TeV and 19.7 fb(-1) at 8 TeV. Each tau lepton decays hadronically or leptonically to an electron or a muon, leading to six different final states for the tau-lepton pair, all considered in this analysis. An excess of events is observed over the expected background contributions, with a local significance larger than 3 standard deviations for m (H) values between 115 and 130 GeV. The best fit of the observed H -> tau tau signal cross section times branching fraction for m(H) = 125 GeV is 0.78 +/- 0.27 times the standard model expectation. These observations constitute evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons.
Issue Date: 
22-May-2014
Citation: 
Journal Of High Energy Physics. New York: Springer, n. 5, 72 p., 2014.
Time Duration: 
72
Publisher: 
Springer
Keywords: 
  • Hadron-Hadron Scattering
  • Higgs physics
Source: 
http://dx.doi.org/10.1007/JHEP05(2014)104
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/111358
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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