A search for t(t)over-bar resonances in lepton plus jets events with highly boosted top quarks collected in pp collisions at sqrt{s} = 7 TeV with the ATLAS detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00388365" target="_blank" >RIV/68378271:_____/12:00388365 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP09(2012)041" target="_blank" >http://dx.doi.org/10.1007/JHEP09(2012)041</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP09(2012)041" target="_blank" >10.1007/JHEP09(2012)041</a>

Result language
angličtina
Original language name
A search for t(t)over-bar resonances in lepton plus jets events with highly boosted top quarks collected in pp collisions at sqrt{s} = 7 TeV with the ATLAS detector
Original language description
A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb^-1 of proton-proton collisions at sqrt(s) = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final stateis specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed ttbar invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limitsare derived on the ttbar production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.
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
<a href="/en/project/LA08032" target="_blank" >LA08032: International experiment ATLAS-CERN</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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