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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00465719" target="_blank" >RIV/68378271:_____/16:00465719 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP05(2016)160" target="_blank" >http://dx.doi.org/10.1007/JHEP05(2016)160</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP05(2016)160" target="_blank" >10.1007/JHEP05(2016)160</a>

Result language
angličtina
Original language name
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
Original language description
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 fb1 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 0.8n
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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