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1.	Aad, G, et al. (author) Search for the Standard Model Higgs boson decaying into bb¯ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector 2016 In: Journal of High Energy Physics. - 1029-8479. ; 2016:5 Journal article (peer-reviewed)abstract A search for Higgs boson production in association with a pair of top quarks (tt¯ H) is performed, where the Higgs boson decays to bb¯, and both top quarks decay hadronically. The data used correspond to an integrated luminosity of 20.3 fb−1 of pp collisions at √s = 8 TeV collected with the ATLAS detector at the Large Hadron Collider. The search selects events with at least six energetic jets and uses a boosted decision tree algorithm to discriminate between signal and Standard Model background. The dominant multijet background is estimated using a dedicated data-driven technique. For a Higgs boson mass of 125 GeV, an upper limit of 6.4 (5.4) times the Standard Model cross section is observed (expected) at 95% confidence level. The best-fit value for the signal strength is μ = 1.6 ± 2.6 times the Standard Model expectation for mH = 125 GeV. Combining all tt¯ H searches carried out by ATLAS at √s = 8 and 7 TeV, an observed (expected) upper limit of 3.1 (1.4) times the Standard Model expectation is obtained at 95% confidence level, with a signal strength μ = 1.7 ± 0.8. © 2016, The Author(s).

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Aad, G (1); Abbott, B. (1); Abdallah, J (1); Abeloos, B (1); Åkesson, Torsten (1); Bocchetta, Simona (1); show more...; Doglioni, Caterina (1); Hedberg, Vincent (1); Jarlskog, Göran (1); Lytken, Else (1); Mjörnmark, Ulf (1); Smirnova, Oxana (1); Viazlo, Oleksandr (1); BRYNGEMARK, LENE (1); Floderus, Anders (1); Aben, R. (1); Abolins, M. (1); Hawkins, Anthony (1); show less...

University: Lund University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2016 (1)

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