Search for single production of vector-like quarks decaying into Wb in pp collisions at SQUARE ROOTs = 8 TeV with the ATLAS detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33162083" target="_blank" >RIV/61989592:15310/16:33162083 - isvavai.cz</a>
Result on the web
<a href="http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-016-4281-8" target="_blank" >http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-016-4281-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-016-4281-8" target="_blank" >10.1140/epjc/s10052-016-4281-8</a>

Result language
angličtina
Original language name
Search for single production of vector-like quarks decaying into Wb in pp collisions at SQUARE ROOTs = 8 TeV with the ATLAS detector
Original language description
A search for singly produced vector-like Q quarks& where Q can be either a T quark with charge + 2 / 3 or a Y quark with charge - 4 / 3 & is performed in proton-proton collisions recorded with the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 20.3 fb- 1 and was produced with a centre-of-mass energy of s=8 TeV. This analysis targets QRIGHTWARDS ARROW Wb decays where the W boson decays leptonically. A veto on massive large-radius jets is used to reject the dominant tt- background. The reconstructed Q-candidate mass& ranging from 0.4 to 1.2 TeV& is used in the search to discriminate signal from background processes. No significant deviation from the Standard Model expectation is observed& and limits are set on the QRIGHTWARDS ARROW Wb cross-section times branching ratio. The results are also interpreted as limits on the QWb coupling and the mixing with the Standard Model sector for a singlet T quark or a Y quark from a doublet. T quarks with masses below 0.95 TeV are excluded at 95 % confidence level& assuming a unit coupling and a BR(TRIGHTWARDS ARROW Wb) = 0.5 & whereas the expected limit is 1.10 TeV.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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

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