Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
18/06/2013
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Resumo |
A search for the standard model Higgs boson produced in association with a top-quark pair is presented using data samples corresponding to an integrated luminosity of 5.0 fb-1 (5.1 fb-1) collected in pp collisions at the center-of-mass energy of 7 TeV (8 TeV). Events are considered where the top-quark pair decays to either one lepton+jets (tt̄ → ℓvqq̄bb̄) or dileptons (tt̄ → ℓ+vl- rfvn1̄bb̄), ℓ being an electron or a muon. The search is optimized for the decay mode H → bb̄. The largest background to the tt̄H signal is top-quark pair production with additional jets. Artificial neural networks are used to discriminate between signal and background events. Combining the results from the 7 TeV and 8 TeV samples, the observed (expected) limit on the cross section for Higgs boson production in association with top-quark pairs for a Higgs boson mass of 125 GeV is 5.8 (5.2) times the standard model expectation. [Figure not available: see fulltext.] © 2013 Cern for the benefit of the CMS collaboration. |
Identificador |
http://dx.doi.org/10.1007/JHEP05(2013)145 Journal of High Energy Physics, v. 2013, n. 5, 2013. 1126-6708 1029-8479 http://hdl.handle.net/11449/75677 10.1007/JHEP05(2013)145 WOS:000321375600062 2-s2.0-84878932561 2-s2.0-84878932561.pdf |
Idioma(s) |
eng |
Relação |
Journal of High Energy Physics |
Direitos |
openAccess |
Palavras-Chave | #Hadron-Hadron Scattering #Higgs physics |
Tipo |
info:eu-repo/semantics/article |