Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/350634
Type: Artigo
Title: Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
Author: David, A.
Abstract: 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 (t (t) over bar -> l nu q (q) over bar 'b (b) over bar) or dileptons (t (t) over bar -> l(+)nu l-nu b (b) over bar), being an electron or a muon. The search is optimized for the decay mode H -> b (b) over bar. The largest background to the t (t) over barH 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
Subject: Hádrons
Country: Itália
Editor: Societa Italiana di Fisica
Rights: Fechado
Identifier DOI: 10.1007/JHEP05(2013)145
Address: https://link.springer.com/article/10.1007%2FJHEP05%282013%29145
Date Issue: 2013
Appears in Collections:IFGW - Artigos e Outros Documentos

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