Measurement of the cross section for top-quark pair production in pp collisions at root s=7 TeV with the ATLAS detector using final states with two high-p(T) leptons
2012 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 5, 059Article in journal (Refereed) Published
A measurement is reported of the production cross section of top-quark pairs (t (t) over bar) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. Candidate events have a signature consistent with containing two isolated leptons, large missing transverse momentum, and at least two jets. Using a data sample corresponding to an integrated luminosity of 0.70 fb(-1), a t (t) over bar production cross section sigma(t (t) over bar) = 176 +/- 5(stat.)(-11)(+14)(syst.) +/- 8(lum.) pb is measured for an assumed top-quark mass of m(t) = 172.5 GeV. This measurement is in good agreement with Standard Model predictions.
Place, publisher, year, edition, pages
2012. no 5, 059
IdentifiersURN: urn:nbn:se:uu:diva-260486DOI: 10.1007/JHEP05(2012)059ISI: 000305236000059OAI: oai:DiVA.org:uu-260486DiVA: diva2:847294
ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1007/JHEP05(2012)0592015-08-192015-08-192015-08-19Bibliographically approved