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Search for the associated production of the Higgs boson with a top-quark pair

Abstract : A search for the standard model Higgs boson produced in association with a top-quark pair (ttbar H) is presented, using data samples corresponding to integrated luminosities of up to 5.1 inverse femtobarns and 19.7 inverse femtobarns collected in pp collisions at center-of-mass energies of 7 TeV and 8 TeV respectively. The search is based on the following signatures of the Higgs boson decay: H to hadrons, H to photons, and H to leptons. The results are characterized by an observed ttbar H signal strength relative to the standard model cross section, mu=sigma/sigma[SM], under the assumption that the Higgs boson decays as expected in the standard model. The best fit value is mu=2.8 +/- 1.0 for a Higgs boson mass of 125.6 GeV.
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http://hal.in2p3.fr/in2p3-01056249
Contributor : Dominique Girod <>
Submitted on : Monday, August 18, 2014 - 11:52:22 AM
Last modification on : Friday, June 5, 2020 - 10:52:07 AM

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V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for the associated production of the Higgs boson with a top-quark pair. Journal of High Energy Physics, Springer, 2014, 09, pp.087. ⟨10.1007/JHEP09(2014)087⟩. ⟨in2p3-01056249⟩

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