Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00470742" target="_blank" >RIV/68378271:_____/16:00470742 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/16:00309073 RIV/68407700:21340/16:00309073 RIV/68407700:21670/16:00309073 RIV/00216208:11320/16:10332021 RIV/61989592:15310/16:33159075
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP01(2016)064" target="_blank" >http://dx.doi.org/10.1007/JHEP01(2016)064</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP01(2016)064" target="_blank" >10.1007/JHEP01(2016)064</a>

Result language
angličtina
Original language name
Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment
Original language description
The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at s=8TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7σ. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0 1.3(stat.)+ 3.2 3.5 (syst.)1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |Vtb | of 1.01 0.10 and a lower limit of 0.80 at the 95% confidence level.
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
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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