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Title
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Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2013
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP05(2013)145
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Volume/pages
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5
(2013)
, p. 1-47
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Article Reference
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145
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ISI
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000321375600062
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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