Search for the Standard Model Higgs boson decaying into $$ b\overline{b} $$ produced in association with top quarks decaying hadronically in pp collisions at $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

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Search for the Standard Model Higgs boson decaying into $$ b\overline{b} $$ produced in association with top quarks decaying hadronically in pp collisions at $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

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Title: Search for the Standard Model Higgs boson decaying into $$ b\overline{b} $$ produced in association with top quarks decaying hadronically in pp collisions at $$ \sqrt{s}=8 $$ TeV with the ATLAS detector
Author: Franklin, Melissa; Huth, John; Morii, Masahiro

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Citation: ATLAS Collaboration. 2016. Search for the Standard Model Higgs boson decaying into $$ b\overline{b} $$ produced in association with top quarks decaying hadronically in pp collisions at $$ \sqrt{s}=8 $$ TeV with the ATLAS detector. J. High Energ. Phys. 5. doi:10.1007/jhep05(2016)160.
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Abstract: A search for Higgs boson production in association with a pair of top quarks (ttH¯ ) 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 ttH¯ 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.
Published Version: doi:10.1007/JHEP05(2016)160
Other Sources: https://arxiv.org/pdf/1604.03812.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:29362019
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