Measurement of the top quark pair production cross section in pp collisions at s=7 TeV in dilepton final states with ATLAS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00389542" target="_blank" >RIV/68378271:_____/12:00389542 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.physletb.2011.12.055" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2011.12.055</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2011.12.055" target="_blank" >10.1016/j.physletb.2011.12.055</a>

Result language
angličtina
Original language name
Measurement of the top quark pair production cross section in pp collisions at s=7 TeV in dilepton final states with ATLAS
Original language description
A measurement of the production cross section of top quark pairs (ttbar) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. Using a data sample corresponding to an integrated luminosity of 35 pb^-1, a ttbar production cross section of 171 +/- 20(stat.) +/- 14(syst.) +8-6(lum.) pb is measured for an assumed top quark mass of 172.5 GeV. A second measurement requiring at least one jet identified as coming from a b quark yields a comparable result, demonstrating that the dilepton final states are consistent with being accompanied by b-quark jets. These measurements are in good agreement with Standard Model predictions.
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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