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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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Özet

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.

Anahtar Kelimeler

Hadron-Hadron ScatteringHiggs physics
RDL Kalıcı Bağlantı (PID)
https://rdlopen.rawdatalibrary.net/r/ebyu/15756Resmi atıflarda kullanılan kalıcı adres
DOI
https://doi.org/10.1007/jhep05(2013)145Yayıncı resmi DOI adresi
Tam Kayıt
AlanDeğerDil
dc.contributor.authorChatrchyan, S.
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorErö, J.
dc.contributor.authorFabjan, C.
dc.contributor.authorFriedl, M.
dc.contributor.authorFrühwirth, R.
dc.contributor.authorGhete, V.M.
dc.contributor.authorHörmann, N.
dc.contributor.authorHrubec, J.
dc.contributor.authorJeitler, M.
dc.contributor.authorKiesenhofer, W.
dc.contributor.authorKnünz, V.
dc.contributor.authorKrammer, M.
dc.contributor.authorKrätschmer, I.
dc.contributor.authorLiko, D.
dc.contributor.authorMikulec, I.
dc.contributor.authorRabady, D.
dc.contributor.authorRahbaran, B.
dc.contributor.authorRohringer, C.
dc.contributor.authorRohringer, H.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorStrauss, J.
dc.contributor.authorTaurok, A.
dc.contributor.authorTreberer-Treberspurg, W.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorMossolov, V.
dc.contributor.authorShumeiko, N.
dc.contributor.authorSuarez Gonzalez, J.
dc.contributor.authorAlderweireldt, S.
dc.contributor.authorBansal, M.
dc.contributor.authorBansal, S.
dc.contributor.authorCornelis, T.
dc.contributor.authorDe Wolf, E.A.
dc.contributor.authorJanssen, X.
dc.contributor.authorKnutsson, A.
dc.contributor.authorLuyckx, S.
dc.contributor.authorMucibello, L.
dc.contributor.authorOchesanu, S.
dc.contributor.authorRoland, B.
dc.contributor.authorRougny, R.
dc.contributor.authorVan Haevermaet, H.
dc.contributor.authorVan Mechelen, P.
dc.contributor.authorVan Remortel, N.
dc.contributor.authorVan Spilbeeck, A.
dc.date.accessioned2026-10-18T20:30:36.145155491Z
dc.date.available2026-10-18T20:30:36.145155491Z
dc.date.issued2013
dc.description.abstractA 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.
dc.description.sponsorshipEuropean Commission, EC; National Science Foundation, NSF, (1151640, 1205960, 1211067, 0969555); National Science Foundation, NSF; Science and Technology Facilities Council, STFC, (ST/K001604/1, ST/H00081X/2, ST/F007094/1, ST/L00609X/1, ST/H000925/1, ST/F007434/1, ST/K001639/1, ST/I000410/1, ST/K003844/1, ST/I505580/1, ST/I005912/1, GRIDPP, CMS, ST/J004901/1, ST/I505572/1, ST/J005665/1, ST/G502347/1, ST/K001256/1, ST/I002200/1, ST/F006748/1); Science and Technology Facilities Council, STFC; Seventh Framework Programme, FP7, (261323); Seventh Framework Programme, FP7; Ministarstvo Znanosti, Obrazovanja i Sporta, MZOS, (098-0982887-2878); Ministarstvo Znanosti, Obrazovanja i Sporta, MZOS; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF, (144921, 146398, 138111); Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF
dc.identifier.doi10.1007/jhep05(2013)145
dc.identifier.issn1126-6708
dc.identifier.issue5
dc.identifier.scopus2-s2.0-84878932561
dc.identifier.startpage145
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/15756
dc.identifier.volume2013
dc.language.isoen
dc.publisherSpringer Verlag
dc.relation.ispartofJournal of High Energy Physics
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectHadron-Hadron Scattering
dc.subjectHiggs physics
dc.titleSearch for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus39
rdl.oa.statusgold
rdl.source.indexSCOPUS